diff --git a/src/source/patch.ts b/src/source/patch.ts
index a37fc900..a3bd02a3 100644
--- a/src/source/patch.ts
+++ b/src/source/patch.ts
@@ -426,7 +426,9 @@ export function patchElementAndDocument(): void {
         this,
         markElement(node as Node),
         null,
-        isDocumentFragment(this) ? globalEnv.rawFragmentAppend : globalEnv.rawAppend,
+        isDocumentFragment(this) || isDocumentShadowRoot(this)
+          ? globalEnv.rawFragmentAppend
+          : globalEnv.rawAppend
       )
       i++
     }