diff --git a/contrib/MacOSX/ngIRCd.xcodeproj/project.pbxproj b/contrib/MacOSX/ngIRCd.xcodeproj/project.pbxproj
index a69eea3c..91bfa7d1 100644
--- a/contrib/MacOSX/ngIRCd.xcodeproj/project.pbxproj
+++ b/contrib/MacOSX/ngIRCd.xcodeproj/project.pbxproj
@@ -754,7 +754,7 @@
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				CODE_SIGN_IDENTITY = "";
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
-				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_NO_COMMON_BLOCKS = NO;
 				GCC_VERSION = "";
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
@@ -783,7 +783,7 @@
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
 				GCC_DEBUGGING_SYMBOLS = full;
-				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_NO_COMMON_BLOCKS = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_VERSION = "";
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;