diff --git a/app/os_macos.go b/app/os_macos.go
index 1789b5c0..b86fab76 100644
--- a/app/os_macos.go
+++ b/app/os_macos.go
@@ -5,7 +5,7 @@
 package app
 
 /*
-#cgo CFLAGS: -DGL_SILENCE_DEPRECATION -Werror -fmodules -fobjc-arc -x objective-c
+#cgo CFLAGS: -DGL_SILENCE_DEPRECATION -Werror -Wno-deprecated-declarations -fmodules -fobjc-arc -x objective-c
 
 #include <AppKit/AppKit.h>
 #include "os_macos.h"
diff --git a/app/os_macos.m b/app/os_macos.m
index f8751d23..9308c501 100644
--- a/app/os_macos.m
+++ b/app/os_macos.m
@@ -104,10 +104,10 @@ void gio_main(CFTypeRef viewRef, const char *title, CGFloat width, CGFloat heigh
 		[NSApp setMainMenu:menuBar];
 
 		NSRect rect = NSMakeRect(0, 0, width, height);
-		NSWindowStyleMask styleMask = NSWindowStyleMaskTitled |
+		NSUInteger styleMask = NSTitledWindowMask |
 			NSWindowStyleMaskResizable |
-			NSWindowStyleMaskMiniaturizable |
-			NSWindowStyleMaskClosable;
+			NSMiniaturizableWindowMask |
+			NSClosableWindowMask;
 		NSWindow* window = [[NSWindow alloc] initWithContentRect:rect
 													   styleMask:styleMask
 														 backing:NSBackingStoreBuffered