diff --git a/CoreFoundation/Base.subproj/CFAsmMacros.h b/CoreFoundation/Base.subproj/CFAsmMacros.h
index c93b266d9f..4dd8a94e50 100644
--- a/CoreFoundation/Base.subproj/CFAsmMacros.h
+++ b/CoreFoundation/Base.subproj/CFAsmMacros.h
@@ -20,5 +20,16 @@
 #define NO_EXEC_STACK_DIRECTIVE
 #endif
 
+.macro SAFESEH_REGISTRATION_DIRECTIVE
+#if defined(_WIN32) && defined(_M_IX86)
+    .def @feat.00
+        .scl 3
+        .type 0
+    .endef
+    .globl @feat.00
+@feat.00 = 1
+#endif
+.endm
+
 #endif
 
diff --git a/CoreFoundation/String.subproj/CFCharacterSetData.S b/CoreFoundation/String.subproj/CFCharacterSetData.S
index 6f81d174be..d5d7a1d20a 100644
--- a/CoreFoundation/String.subproj/CFCharacterSetData.S
+++ b/CoreFoundation/String.subproj/CFCharacterSetData.S
@@ -22,4 +22,4 @@ _C_LABEL(__CFCharacterSetBitmapDataSize):
     .int _C_LABEL(__CFCharacterSetBitmapDataEnd) - _C_LABEL(__CFCharacterSetBitmapData)
 
 NO_EXEC_STACK_DIRECTIVE
-
+SAFESEH_REGISTRATION_DIRECTIVE
diff --git a/CoreFoundation/String.subproj/CFUniCharPropertyDatabase.S b/CoreFoundation/String.subproj/CFUniCharPropertyDatabase.S
index 32e4397e6c..b57310e507 100644
--- a/CoreFoundation/String.subproj/CFUniCharPropertyDatabase.S
+++ b/CoreFoundation/String.subproj/CFUniCharPropertyDatabase.S
@@ -22,4 +22,4 @@ _C_LABEL(__CFUniCharPropertyDatabaseSize):
     .int _C_LABEL(__CFUniCharPropertyDatabaseEnd) - _C_LABEL(__CFUniCharPropertyDatabase)
 
 NO_EXEC_STACK_DIRECTIVE
-
+SAFESEH_REGISTRATION_DIRECTIVE
diff --git a/CoreFoundation/String.subproj/CFUnicodeData.S b/CoreFoundation/String.subproj/CFUnicodeData.S
index d07cf18ebf..40c1092baf 100644
--- a/CoreFoundation/String.subproj/CFUnicodeData.S
+++ b/CoreFoundation/String.subproj/CFUnicodeData.S
@@ -36,4 +36,4 @@ _C_LABEL(__CFUnicodeDataLSize):
 #endif
 
 NO_EXEC_STACK_DIRECTIVE
-
+SAFESEH_REGISTRATION_DIRECTIVE