diff --git a/browser/base/content/browser-siteIdentity.js b/browser/base/content/browser-siteIdentity.js
index c5d465a489a2..c334d854be42 100644
--- a/browser/base/content/browser-siteIdentity.js
+++ b/browser/base/content/browser-siteIdentity.js
@@ -770,6 +770,7 @@ var gIdentityHandler = {
         "identity.extension.label",
         [extensionName]
       );
+      icon_labels_dir = "";
     } else if (this._uriHasHost && this._isSecureConnection) {
       // This is a secure connection.
       this._identityBox.className = "verifiedDomain";