diff --git a/browser/components/shell/nsShellService.h b/browser/components/shell/nsShellService.h
index 516a8423abf4..9c2c4baaef2f 100644
--- a/browser/components/shell/nsShellService.h
+++ b/browser/components/shell/nsShellService.h
@@ -4,7 +4,6 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #define PREF_CHECKDEFAULTBROWSER "browser.shell.checkDefaultBrowser"
-#define PREF_SKIPDEFAULTBROWSERCHECK "browser.shell.skipDefaultBrowserCheck"
 #define PREF_DEFAULTBROWSERCHECKCOUNT "browser.shell.defaultBrowserCheckCount"
 
 #define SHELLSERVICE_PROPERTIES "chrome://browser/locale/shellservice.properties"