diff --git a/browser/components/urlbar/UrlbarPrefs.jsm b/browser/components/urlbar/UrlbarPrefs.jsm
index cf4c98955fa4..955b5539626a 100644
--- a/browser/components/urlbar/UrlbarPrefs.jsm
+++ b/browser/components/urlbar/UrlbarPrefs.jsm
@@ -10,7 +10,7 @@
  * preferences, but only for variables with fallback prefs.
  */
 
-var EXPORTED_SYMBOLS = ["UrlbarPrefs", "UrlbarPrefsObserver"];
+var EXPORTED_SYMBOLS = ["UrlbarPrefs"];
 
 const { XPCOMUtils } = ChromeUtils.importESModule(
   "resource://gre/modules/XPCOMUtils.sys.mjs"