diff --git a/Tools/XcodeCapp/XcodeCapp/UserDefaults.h b/Tools/XcodeCapp/XcodeCapp/UserDefaults.h
index 903fd7b6c..2843e57c7 100644
--- a/Tools/XcodeCapp/XcodeCapp/UserDefaults.h
+++ b/Tools/XcodeCapp/XcodeCapp/UserDefaults.h
@@ -19,7 +19,6 @@ extern NSString * const kDefaultXCCReactToInodeMod;
 extern NSString * const kDefaultXCCReopenLastProject;
 extern NSString * const kDefaultXCCAutoOpenErrorsPanelOnErrors;
 extern NSString * const kDefaultXCCAutoOpenErrorsPanelOnCappLint;
-extern NSString * const kDefaultXCCAutoOpenErrorsPanelOnObjjWarnings;
 extern NSString * const kDefaultXCCAutoShowNotificationOnErrors;
 extern NSString * const kDefaultXCCAutoShowNotificationOnCappLint;
 extern NSString * const kDefaultXCCUseDebugFrameworkWithObjj;