diff --git a/pkgs/development/libraries/qt-6/modules/qtwebengine.nix b/pkgs/development/libraries/qt-6/modules/qtwebengine.nix
index 8670fba6bb2a6..ad34340512108 100644
--- a/pkgs/development/libraries/qt-6/modules/qtwebengine.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtwebengine.nix
@@ -196,7 +196,7 @@ qtModule {
   ] ++ lib.optionals enableProprietaryCodecs [
     "-DQT_FEATURE_webengine_proprietary_codecs=ON"
   ] ++ lib.optionals stdenv.isDarwin [
-    "-DCMAKE_OSX_DEPLOYMENT_TARGET=${stdenv.targetPlatform.darwinSdkVersion}"
+    "-DCMAKE_OSX_DEPLOYMENT_TARGET=${stdenv.hostPlatform.darwinSdkVersion}"
   ];
 
   propagatedBuildInputs = [