diff --git a/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c b/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c
index 16fd793c12..476c8b39ad 100644
--- a/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c
+++ b/MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c
@@ -544,6 +544,7 @@ CoreDispatcher (
           &DriverEntry->ImageHandle,
           sizeof (DriverEntry->ImageHandle)
           );
+        ASSERT (DriverEntry->ImageHandle != NULL);
   
         Status = CoreStartImage (DriverEntry->ImageHandle, NULL, NULL);
   
diff --git a/MdeModulePkg/Core/Dxe/FwVolBlock/FwVolBlock.c b/MdeModulePkg/Core/Dxe/FwVolBlock/FwVolBlock.c
index 27e9f9e0b1..f44310f8ef 100644
--- a/MdeModulePkg/Core/Dxe/FwVolBlock/FwVolBlock.c
+++ b/MdeModulePkg/Core/Dxe/FwVolBlock/FwVolBlock.c
@@ -640,6 +640,7 @@ CoreProcessFirmwareVolume (
   // somehow.
   //
   if (!EFI_ERROR(Status)) {
+    ASSERT (*FVProtocolHandle != NULL);
     Ptr = NULL;
     Status = CoreHandleProtocol (*FVProtocolHandle, &gEfiFirmwareVolume2ProtocolGuid, (VOID **) &Ptr);
     if (EFI_ERROR(Status) || (Ptr == NULL)) {
diff --git a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiProto.c b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiProto.c
index 331f9d8d22..0853f98767 100644
--- a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiProto.c
+++ b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiProto.c
@@ -403,6 +403,7 @@ IScsiReceiveLoginRsp (
   //
   // A Login Response is received, process it.
   //
+  ASSERT (Pdu != NULL);
   Status = IScsiProcessLoginRsp (Conn, Pdu);
 
   NetbufFree (Pdu);