diff --git a/EdkCompatibilityPkg/Foundation/Include/Ia32/EfiBind.h b/EdkCompatibilityPkg/Foundation/Include/Ia32/EfiBind.h
index c89ca9d00e..0f5b220731 100644
--- a/EdkCompatibilityPkg/Foundation/Include/Ia32/EfiBind.h
+++ b/EdkCompatibilityPkg/Foundation/Include/Ia32/EfiBind.h
@@ -309,7 +309,7 @@ typedef int32_t   intn_t;
 //
 // For symbol name in GNU assembly code, an extra "_" is necessary
 //
-#if __GNUC__
+#if defined(__GNUC__)
   #if defined(linux)
     #define ASM_PFX(name) name
   #else
diff --git a/EdkCompatibilityPkg/Foundation/Include/X64/EfiBind.h b/EdkCompatibilityPkg/Foundation/Include/X64/EfiBind.h
index d3bf5a077e..273490eeca 100644
--- a/EdkCompatibilityPkg/Foundation/Include/X64/EfiBind.h
+++ b/EdkCompatibilityPkg/Foundation/Include/X64/EfiBind.h
@@ -261,7 +261,7 @@ typedef int64_t   intn_t;
 //
 // For symbol name in GNU assembly code, an extra "_" is necessary
 //
-#if __GNUC__
+#if defined(__GNUC__)
   #if defined(linux)
     #define ASM_PFX(name) name
   #else