diff --git a/MdePkg/Library/DxePcdLib/DxePcdLib.c b/MdePkg/Library/DxePcdLib/DxePcdLib.c
index 33d2e023a8..e6feeaccdc 100644
--- a/MdePkg/Library/DxePcdLib/DxePcdLib.c
+++ b/MdePkg/Library/DxePcdLib/DxePcdLib.c
@@ -904,7 +904,7 @@ LibPcdCallbackOnSet (
 
   ASSERT (NotificationFunction != NULL);
 
-  Status = mPiPcd->CallbackOnSet (Guid, TokenNumber, NotificationFunction);
+  Status = mPiPcd->CallbackOnSet (Guid, TokenNumber, (EFI_PCD_PROTOCOL_CALLBACK) NotificationFunction);
 
   ASSERT_EFI_ERROR (Status);
 
@@ -938,7 +938,7 @@ LibPcdCancelCallback (
 
   ASSERT (NotificationFunction != NULL);
     
-  Status = mPiPcd->CancelCallback (Guid, TokenNumber, NotificationFunction);
+  Status = mPiPcd->CancelCallback (Guid, TokenNumber, (EFI_PCD_PROTOCOL_CALLBACK) NotificationFunction);
 
   ASSERT_EFI_ERROR (Status);
 
diff --git a/MdePkg/Library/PeiPcdLib/PeiPcdLib.c b/MdePkg/Library/PeiPcdLib/PeiPcdLib.c
index 5dcb16ad43..2b883268c8 100644
--- a/MdePkg/Library/PeiPcdLib/PeiPcdLib.c
+++ b/MdePkg/Library/PeiPcdLib/PeiPcdLib.c
@@ -893,7 +893,7 @@ LibPcdCallbackOnSet (
 
   ASSERT (NotificationFunction != NULL);
 
-  Status = (GetPiPcdPpiPointer ())->CallbackOnSet (Guid, TokenNumber, NotificationFunction);
+  Status = (GetPiPcdPpiPointer ())->CallbackOnSet (Guid, TokenNumber, (EFI_PCD_PPI_CALLBACK) NotificationFunction);
 
   ASSERT_EFI_ERROR (Status);
 
@@ -927,7 +927,7 @@ LibPcdCancelCallback (
 
   ASSERT (NotificationFunction != NULL);
 
-  Status = (GetPiPcdPpiPointer ())->CancelCallback (Guid, TokenNumber, NotificationFunction);
+  Status = (GetPiPcdPpiPointer ())->CancelCallback (Guid, TokenNumber, (EFI_PCD_PPI_CALLBACK) NotificationFunction);
 
   ASSERT_EFI_ERROR (Status);