diff --git a/pkgs/development/libraries/qt-6/modules/qtdeclarative.nix b/pkgs/development/libraries/qt-6/modules/qtdeclarative.nix
index b76baea49930..c8abc71a2235 100644
--- a/pkgs/development/libraries/qt-6/modules/qtdeclarative.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtdeclarative.nix
@@ -32,4 +32,8 @@ qtModule {
     "bin/qmlscene"
     "bin/qmltestrunner"
   ];
+
+  NIX_CFLAGS_COMPILE = [
+    "-fmacro-prefix-map=${qtbase.dev}=qtbase.dev"
+  ];
 }