diff --git a/projectfiles/Xcode/Wesnoth.xcodeproj/project.pbxproj b/projectfiles/Xcode/Wesnoth.xcodeproj/project.pbxproj
index 28f7d6d52cb..e0434bf82be 100644
--- a/projectfiles/Xcode/Wesnoth.xcodeproj/project.pbxproj
+++ b/projectfiles/Xcode/Wesnoth.xcodeproj/project.pbxproj
@@ -4839,8 +4839,8 @@
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_CHECK_SWITCH_STATEMENTS = YES;
+				GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES;
 				GCC_WARN_MISSING_PARENTHESES = YES;
-				GCC_WARN_MULTIPLE_DEFINITION_TYPES_FOR_SELECTOR = YES;
 				GCC_WARN_NON_VIRTUAL_DESTRUCTOR = YES;
 				GCC_WARN_SIGN_COMPARE = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
@@ -4868,6 +4868,7 @@
 				);
 				PREBINDING = NO;
 				SDKROOT = "";
+				WARNING_CFLAGS = "-Wall";
 			};
 			name = Debug;
 		};