diff --git a/source/portable/Compiler/IAR/pack_struct_start.h b/source/portable/Compiler/IAR/pack_struct_start.h
index 9cd5a3274d..a2dff65996 100644
--- a/source/portable/Compiler/IAR/pack_struct_start.h
+++ b/source/portable/Compiler/IAR/pack_struct_start.h
@@ -36,7 +36,4 @@
  * 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