diff --git a/glfw/cocoa_window.m b/glfw/cocoa_window.m
index e673d8c95..97ee504b6 100644
--- a/glfw/cocoa_window.m
+++ b/glfw/cocoa_window.m
@@ -2439,7 +2439,7 @@ void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor UNUSED)
 bool _glfwPlatformIsFullscreen(_GLFWwindow* w, unsigned int flags) {
     NSWindow *window = w->ns.object;
     bool traditional = !(flags & 1);
-    if (traditional) { if(@available(macOS 10.16, *)) return w->ns.in_traditional_fullscreen; }
+    if (traditional) { if(@available(macOS 11.0, *)) return w->ns.in_traditional_fullscreen; }
     NSWindowStyleMask sm = [window styleMask];
     return sm & NSWindowStyleMaskFullScreen;
 }
@@ -2450,7 +2450,7 @@ bool _glfwPlatformToggleFullscreen(_GLFWwindow* w, unsigned int flags) {
     bool traditional = !(flags & 1);
     NSWindowStyleMask sm = [window styleMask];
     if (traditional) {
-        if (@available(macOS 10.16, *)) {
+        if (@available(macOS 11.0, *)) {
             // As of Big Turd NSWindowStyleMaskFullScreen is no longer useable
             if (!w->ns.in_traditional_fullscreen) {
                 w->ns.pre_full_screen_style_mask = sm;