diff --git a/pkgs/development/libraries/qt-6/modules/qtdoc.nix b/pkgs/development/libraries/qt-6/modules/qtdoc.nix
index 004a18f53c78..3bbe39e5ee20 100644
--- a/pkgs/development/libraries/qt-6/modules/qtdoc.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtdoc.nix
@@ -13,7 +13,7 @@ qtModule {
           --replace '$QT_INSTALL_DOCS' "${qtbase}/share/doc"
     done
   '';
-  nativeBuildInputs = [ qttools ];
+  nativeBuildInputs = [ (qttools.override { withClang = true; }) ];
   qtInputs = [ qtdeclarative ];
   cmakeFlags = [
     "-DCMAKE_MESSAGE_LOG_LEVEL=STATUS"
diff --git a/pkgs/development/tools/qtcreator/qt6.nix b/pkgs/development/tools/qtcreator/qt6.nix
index 1d61966386f4..25d056917e43 100644
--- a/pkgs/development/tools/qtcreator/qt6.nix
+++ b/pkgs/development/tools/qtcreator/qt6.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     cmake
     pkg-config
-    qttools
+    (qttools.override { withClang = true; })
     wrapQtAppsHook
     python3
     ninja