diff --git a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
index 099e38ef43..f878befaf2 100644
--- a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
+++ b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
@@ -443,10 +443,10 @@ Returns:
               // usage in temporary memory for debuging.
               //
               DEBUG_CODE_BEGIN ();
-                UINTN  *StackPointer;
+                UINT32  *StackPointer;
                 
-                for (StackPointer = (UINTN*)SecCoreData->StackBase;
-                     (StackPointer < (UINTN*)((UINTN)SecCoreData->StackBase + SecCoreData->StackSize)) \
+                for (StackPointer = (UINT32*)SecCoreData->StackBase;
+                     (StackPointer < (UINT32*)((UINTN)SecCoreData->StackBase + SecCoreData->StackSize)) \
                      && (*StackPointer == INIT_CAR_VALUE);
                      StackPointer ++);