diff --git a/MdePkg/Include/IndustryStandard/Sal.h b/MdePkg/Include/IndustryStandard/Sal.h
index bf6c54b130..df0c37090b 100644
--- a/MdePkg/Include/IndustryStandard/Sal.h
+++ b/MdePkg/Include/IndustryStandard/Sal.h
@@ -111,7 +111,7 @@ typedef struct {
 **/
 typedef
 SAL_RETURN_REGS
-(EFIAPI *SAL_PROC) (
+(EFIAPI *SAL_PROC)(
   IN UINT64 FunctionId,
   IN UINT64 Arg1,
   IN UINT64 Arg2,