diff --git a/pep-3121.txt b/pep-3121.txt
index d08436b58..333b73c97 100644
--- a/pep-3121.txt
+++ b/pep-3121.txt
@@ -169,7 +169,7 @@ function, and add the following code instead::
   {
     PyObject *res = PyModule_New("xx", &xxmodule);
     if (!res) return NULL;
-    xxstate(res)->ErrorObject = PyErr_NewException("xx.error, NULL, NULL);
+    xxstate(res)->ErrorObject = PyErr_NewException("xx.error", NULL, NULL);
     if (!xxstate(res)->ErrorObject) {
       Py_DECREF(res);
       return NULL;