diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
index 1ccb9c7787..f136b5d569 100644
--- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
+++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
@@ -321,7 +321,7 @@ SmmReadyToBootHandler (
              NULL,
              (VOID **)&SxDispatch
              );
-  if (!EFI_ERROR (Status)) {
+  if (!EFI_ERROR (Status) && (SxDispatch != NULL)) {
     //
     // Register a S3 entry callback function to
     // determine if it will be during S3 resume.