diff --git a/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.c b/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.c
index 6241c5208b..9e8dfae6cc 100644
--- a/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.c
+++ b/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.c
@@ -1803,6 +1803,7 @@ MeasureVariable (
                (UINT8*)VarLog
                );
   } else {
+    ASSERT (VarData != NULL);
     Status = TcgDxeHashLogExtendEvent (
                0,
                (UINT8*)VarData,