diff --git a/editor/libeditor/html/nsHTMLEditRules.cpp b/editor/libeditor/html/nsHTMLEditRules.cpp
index c4812cf6c47..212c49ed0d6 100644
--- a/editor/libeditor/html/nsHTMLEditRules.cpp
+++ b/editor/libeditor/html/nsHTMLEditRules.cpp
@@ -9203,7 +9203,7 @@ void
 nsHTMLEditRules::DocumentModifiedWorker()
 {
   if (!mHTMLEditor) {
-    return NS_OK;
+    return;
   }
   nsCOMPtr<nsIHTMLEditor> kungFuDeathGrip(mHTMLEditor);
   nsCOMPtr<nsISelection> selection;