diff --git a/src/utils/functional.ts b/src/utils/functional.ts
index da06f7fdc..978808d7f 100644
--- a/src/utils/functional.ts
+++ b/src/utils/functional.ts
@@ -7,6 +7,7 @@ type InheritContext = Partial<VNodeData> & ObjectIndex;
 
 const inheritKey = [
   'ref',
+  'key',
   'style',
   'class',
   'attrs',