diff --git a/tests/test_modutils.py b/tests/test_modutils.py
index 692984b305..0bdcbf2fa0 100644
--- a/tests/test_modutils.py
+++ b/tests/test_modutils.py
@@ -269,7 +269,7 @@ def test_std_lib(self) -> None:
         )
 
     def test_std_lib_found_before_same_named_package_on_path(self) -> None:
-        sys.path.insert(0, resources.RESOURCE_PATH)
+        sys.path.insert(0, str(resources.RESOURCE_PATH))
         self.addCleanup(sys.path.pop, 0)
 
         file = modutils.file_from_modpath(["copy"])