diff --git a/Python/pathconfig.c b/Python/pathconfig.c
index 0ccb898..f0b13fd 100644
--- a/Python/pathconfig.c
+++ b/Python/pathconfig.c
@@ -394,7 +394,7 @@
     _PyInitError err;
     _PyCoreConfig config = _PyCoreConfig_INIT;
 
-    err = _PyCoreConfig_Read(&config, NULL);
+    err = _PyCoreConfig_Read(&config);
     if (_Py_INIT_FAILED(err)) {
         goto error;
     }