--- a/src/fmpy/gui/__init__.py
+++ b/src/fmpy/gui/__init__.py
@@ -15,6 +15,7 @@ def compile_resources():

     if os.name == 'posix':
         pyside_dir = pyside_dir / 'Qt' / 'libexec'
+    pyside_dir = Path("@qt6libexec@")

     gui_dir = Path(__file__).parent
     forms_dir = gui_dir / 'forms'