1 files changed, 1 insertions, 1 deletions
diff --git a/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c b/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
index 8bcd498e77..36cf919b42 100644
--- a/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
+++ b/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
@@ -302,8 +302,8 @@ AppendToMultiString (
                                   MultiStringSize + AppendStringSize,
                                   (VOID *) (*MultiString)
                                   );
+    ASSERT (*MultiString != NULL);
   }
-
   //
   // Append the incoming string
   //