diff --git a/GLTutorial.xcodeproj/project.pbxproj b/GLTutorial.xcodeproj/project.pbxproj
index 72c15ad..d5492e9 100644
--- a/GLTutorial.xcodeproj/project.pbxproj
+++ b/GLTutorial.xcodeproj/project.pbxproj
@@ -268,7 +268,6 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.7;
 				OTHER_CFLAGS = (
 					"-Xclang",
-					"-fobjc-nonfragile-abi",
 					"-DDEBUG",
 				);
 				PRODUCT_NAME = GLTutorial;
@@ -323,7 +322,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				PREBINDING = NO;
-				SDKROOT = macosx10.7;
+				SDKROOT = macosx;
 			};
 			name = Debug;
 		};
@@ -335,7 +334,7 @@
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				PREBINDING = NO;
-				SDKROOT = macosx10.7;
+				SDKROOT = macosx;
 			};
 			name = Release;
 		};