diff --git a/mozilla/editor/ui/composer/content/ComposerCommands.js b/mozilla/editor/ui/composer/content/ComposerCommands.js
index 7ff46f9f8de..5e94afe765f 100644
--- a/mozilla/editor/ui/composer/content/ComposerCommands.js
+++ b/mozilla/editor/ui/composer/content/ComposerCommands.js
@@ -1762,7 +1762,7 @@ function SaveDocument(aSaveAs, aSaveCopy, aMimeType)
           if (oldLocation == relatedFilesDirStr || IsUrlAboutBlank(oldLocation))
             relatedFilesDir = null;
           else
-            relatedFilesDir = tempLocalFile.parent;  // this is wrong if parent is the root!
+            relatedFilesDir = tempLocalFile.parent;
         }
         else
         {