diff --git a/MdePkg/Library/BaseOrderedCollectionRedBlackTreeLib/BaseOrderedCollectionRedBlackTreeLib.c b/MdePkg/Library/BaseOrderedCollectionRedBlackTreeLib/BaseOrderedCollectionRedBlackTreeLib.c
index 650a761480..1e6c36148c 100644
--- a/MdePkg/Library/BaseOrderedCollectionRedBlackTreeLib/BaseOrderedCollectionRedBlackTreeLib.c
+++ b/MdePkg/Library/BaseOrderedCollectionRedBlackTreeLib/BaseOrderedCollectionRedBlackTreeLib.c
@@ -67,6 +67,8 @@ OrderedCollectionUserStruct (
   IN CONST RED_BLACK_TREE_NODE *Node
   )
 {
+  ASSERT (Node != NULL);
+  
   return Node->UserStruct;
 }