diff --git a/tests/fixtures/extended_with_no_setup/extended/extended.c b/tests/fixtures/extended_with_no_setup/extended/extended.c
index 25a028eb11e..7ae5d50ce93 100644
--- a/tests/fixtures/extended_with_no_setup/extended/extended.c
+++ b/tests/fixtures/extended_with_no_setup/extended/extended.c
@@ -10,7 +10,7 @@ static PyMethodDef module_methods[] = {
     {
         "hello",
         (PyCFunction) hello,
-        NULL,
+        METH_NOARGS,
         PyDoc_STR("Say hello.")
     },
     {NULL}