--- a/qtpy/tests/test_main.py	2023-08-29 13:07:50.000000000 -0300
+++ b/qtpy/tests/test_main.py	2023-09-29 22:04:52.945280612 -0300
@@ -115,7 +115,7 @@
     pytest.importorskip(mod, reason=f"Requires {api}")
     # clean env
     env = os.environ.copy()
-    for key in ("QT_API", "USE_QT_API"):
+    for key in ("QT_API", "USE_QT_API", "FORCE_QT_API"):
         if key in env:
             del env[key]
     cmd = f"""