diff --git a/portable/ARMv8M/non_secure/portmacrocommon.h b/portable/ARMv8M/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/ARMv8M/non_secure/portmacrocommon.h
+++ b/portable/ARMv8M/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/GCC/ARM_CM23/non_secure/portmacrocommon.h b/portable/GCC/ARM_CM23/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/GCC/ARM_CM23/non_secure/portmacrocommon.h
+++ b/portable/GCC/ARM_CM23/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/GCC/ARM_CM23_NTZ/non_secure/portmacrocommon.h b/portable/GCC/ARM_CM23_NTZ/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/GCC/ARM_CM23_NTZ/non_secure/portmacrocommon.h
+++ b/portable/GCC/ARM_CM23_NTZ/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/GCC/ARM_CM33/non_secure/portmacrocommon.h b/portable/GCC/ARM_CM33/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/GCC/ARM_CM33/non_secure/portmacrocommon.h
+++ b/portable/GCC/ARM_CM33/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/GCC/ARM_CM33_NTZ/non_secure/portmacrocommon.h b/portable/GCC/ARM_CM33_NTZ/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/GCC/ARM_CM33_NTZ/non_secure/portmacrocommon.h
+++ b/portable/GCC/ARM_CM33_NTZ/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/GCC/ARM_CM35P/non_secure/portmacrocommon.h b/portable/GCC/ARM_CM35P/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/GCC/ARM_CM35P/non_secure/portmacrocommon.h
+++ b/portable/GCC/ARM_CM35P/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/GCC/ARM_CM35P_NTZ/non_secure/portmacrocommon.h b/portable/GCC/ARM_CM35P_NTZ/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/GCC/ARM_CM35P_NTZ/non_secure/portmacrocommon.h
+++ b/portable/GCC/ARM_CM35P_NTZ/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/GCC/ARM_CM3_MPU/portmacro.h b/portable/GCC/ARM_CM3_MPU/portmacro.h
index 6964a28ecf0..a65bb2162ca 100644
--- a/portable/GCC/ARM_CM3_MPU/portmacro.h
+++ b/portable/GCC/ARM_CM3_MPU/portmacro.h
@@ -129,8 +129,7 @@ typedef struct MPU_REGION_SETTINGS
 
 #define MAX_CONTEXT_SIZE                    ( 20 )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-#define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
 #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
 /* Flags used for xMPU_SETTINGS.ulTaskFlags member. */
diff --git a/portable/GCC/ARM_CM4_MPU/portmacro.h b/portable/GCC/ARM_CM4_MPU/portmacro.h
index e1f30742567..6f8f0c4e9e7 100644
--- a/portable/GCC/ARM_CM4_MPU/portmacro.h
+++ b/portable/GCC/ARM_CM4_MPU/portmacro.h
@@ -223,8 +223,7 @@ typedef struct MPU_REGION_SETTINGS
 
 #define MAX_CONTEXT_SIZE                    ( 52 )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-#define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
 #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
 /* Flags used for xMPU_SETTINGS.ulTaskFlags member. */
diff --git a/portable/GCC/ARM_CM55/non_secure/portmacrocommon.h b/portable/GCC/ARM_CM55/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/GCC/ARM_CM55/non_secure/portmacrocommon.h
+++ b/portable/GCC/ARM_CM55/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/GCC/ARM_CM55_NTZ/non_secure/portmacrocommon.h b/portable/GCC/ARM_CM55_NTZ/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/GCC/ARM_CM55_NTZ/non_secure/portmacrocommon.h
+++ b/portable/GCC/ARM_CM55_NTZ/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/GCC/ARM_CM85/non_secure/portmacrocommon.h b/portable/GCC/ARM_CM85/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/GCC/ARM_CM85/non_secure/portmacrocommon.h
+++ b/portable/GCC/ARM_CM85/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/GCC/ARM_CM85_NTZ/non_secure/portmacrocommon.h b/portable/GCC/ARM_CM85_NTZ/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/GCC/ARM_CM85_NTZ/non_secure/portmacrocommon.h
+++ b/portable/GCC/ARM_CM85_NTZ/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/IAR/ARM_CM23/non_secure/portmacrocommon.h b/portable/IAR/ARM_CM23/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/IAR/ARM_CM23/non_secure/portmacrocommon.h
+++ b/portable/IAR/ARM_CM23/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/IAR/ARM_CM23_NTZ/non_secure/portmacrocommon.h b/portable/IAR/ARM_CM23_NTZ/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/IAR/ARM_CM23_NTZ/non_secure/portmacrocommon.h
+++ b/portable/IAR/ARM_CM23_NTZ/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/IAR/ARM_CM33/non_secure/portmacrocommon.h b/portable/IAR/ARM_CM33/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/IAR/ARM_CM33/non_secure/portmacrocommon.h
+++ b/portable/IAR/ARM_CM33/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/IAR/ARM_CM33_NTZ/non_secure/portmacrocommon.h b/portable/IAR/ARM_CM33_NTZ/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/IAR/ARM_CM33_NTZ/non_secure/portmacrocommon.h
+++ b/portable/IAR/ARM_CM33_NTZ/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/IAR/ARM_CM35P/non_secure/portmacrocommon.h b/portable/IAR/ARM_CM35P/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/IAR/ARM_CM35P/non_secure/portmacrocommon.h
+++ b/portable/IAR/ARM_CM35P/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/IAR/ARM_CM35P_NTZ/non_secure/portmacrocommon.h b/portable/IAR/ARM_CM35P_NTZ/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/IAR/ARM_CM35P_NTZ/non_secure/portmacrocommon.h
+++ b/portable/IAR/ARM_CM35P_NTZ/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/IAR/ARM_CM4F_MPU/portmacro.h b/portable/IAR/ARM_CM4F_MPU/portmacro.h
index d970edb09ce..5a102d0ad0b 100644
--- a/portable/IAR/ARM_CM4F_MPU/portmacro.h
+++ b/portable/IAR/ARM_CM4F_MPU/portmacro.h
@@ -225,8 +225,7 @@ typedef struct MPU_REGION_SETTINGS
 
 #define MAX_CONTEXT_SIZE                    ( 52 )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-#define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
 #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
 /* Flags used for xMPU_SETTINGS.ulTaskFlags member. */
diff --git a/portable/IAR/ARM_CM55/non_secure/portmacrocommon.h b/portable/IAR/ARM_CM55/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/IAR/ARM_CM55/non_secure/portmacrocommon.h
+++ b/portable/IAR/ARM_CM55/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/IAR/ARM_CM55_NTZ/non_secure/portmacrocommon.h b/portable/IAR/ARM_CM55_NTZ/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/IAR/ARM_CM55_NTZ/non_secure/portmacrocommon.h
+++ b/portable/IAR/ARM_CM55_NTZ/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/IAR/ARM_CM85/non_secure/portmacrocommon.h b/portable/IAR/ARM_CM85/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/IAR/ARM_CM85/non_secure/portmacrocommon.h
+++ b/portable/IAR/ARM_CM85/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/IAR/ARM_CM85_NTZ/non_secure/portmacrocommon.h b/portable/IAR/ARM_CM85_NTZ/non_secure/portmacrocommon.h
index bd6e2f4f2be..6b389735ac6 100644
--- a/portable/IAR/ARM_CM85_NTZ/non_secure/portmacrocommon.h
+++ b/portable/IAR/ARM_CM85_NTZ/non_secure/portmacrocommon.h
@@ -287,8 +287,7 @@ extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) P
     #define portSTACK_FRAME_HAS_PADDING_FLAG    ( 1UL << 0UL )
     #define portTASK_IS_PRIVILEGED_FLAG         ( 1UL << 1UL )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-    #define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
     #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
     typedef struct MPU_SETTINGS
diff --git a/portable/RVDS/ARM_CM4_MPU/portmacro.h b/portable/RVDS/ARM_CM4_MPU/portmacro.h
index c70e5719b90..5e32e4a470b 100644
--- a/portable/RVDS/ARM_CM4_MPU/portmacro.h
+++ b/portable/RVDS/ARM_CM4_MPU/portmacro.h
@@ -223,8 +223,7 @@ typedef struct MPU_REGION_SETTINGS
 
 #define MAX_CONTEXT_SIZE                    ( 52 )
 
-/* Size of an Access Control List (ACL) entry in bits and bytes. */
-#define portACL_ENTRY_SIZE_BYTES            ( 4U )
+/* Size of an Access Control List (ACL) entry in bits. */
 #define portACL_ENTRY_SIZE_BITS             ( 32U )
 
 /* Flags used for xMPU_SETTINGS.ulTaskFlags member. */