diff --git a/source/portable/Compiler/IAR/pack_struct_start.h b/source/portable/Compiler/IAR/pack_struct_start.h
index a2dff6599..9cd5a3274 100644
--- a/source/portable/Compiler/IAR/pack_struct_start.h
+++ b/source/portable/Compiler/IAR/pack_struct_start.h
@@ -36,4 +36,7 @@
  * end of file not followed by a semicolon or a declarator] emitted by the IAR Compiler */
 #pragma diag_suppress=Pe1644
 
+/* Following line is to suppress the warning about the usage of forward declarations. */
+#pragma diag_suppress=Pe301
+
 __packed