diff --git a/src/cocoa_window.m b/src/cocoa_window.m
index 449025c1..2d065c35 100644
--- a/src/cocoa_window.m
+++ b/src/cocoa_window.m
@@ -1265,7 +1265,7 @@ void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
 
     if (window->monitor)
     {
-        styleMask &= ~(NSWindowStyleMaskTitled | NSWindowStyleMaskClosable);
+        styleMask &= ~(NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskResizable);
         styleMask |= NSWindowStyleMaskBorderless;
     }
     else