diff --git a/src/cocoa_window.m b/src/cocoa_window.m
index 5bb33097..98c220ed 100644
--- a/src/cocoa_window.m
+++ b/src/cocoa_window.m
@@ -728,7 +728,7 @@ static GLboolean createContext(_GLFWwindow* window,
 #define ADD_ATTR2(x, y) { ADD_ATTR(x); ADD_ATTR(y); }
 
     // Arbitrary array size here
-    NSOpenGLPixelFormatAttribute attributes[24];
+    NSOpenGLPixelFormatAttribute attributes[40];
 
     ADD_ATTR(NSOpenGLPFADoubleBuffer);