diff --git a/pkgs/development/libraries/qt-6/modules/qtwebengine.nix b/pkgs/development/libraries/qt-6/modules/qtwebengine.nix
index e6f785cd833c..8f0ddad4a58a 100644
--- a/pkgs/development/libraries/qt-6/modules/qtwebengine.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtwebengine.nix
@@ -316,5 +316,7 @@ qtModule {
     # This build takes a long time; particularly on slow architectures
     # 1 hour on 32x3.6GHz -> maybe 12 hours on 4x2.4GHz
     timeout = 24 * 3600;
+    # Not compatible with macOS 11 without massive patching
+    broken = stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "12";
   };
 }