diff --git a/Objects/abstract.c b/Objects/abstract.c
index c30fb4e..2ab3371 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -747,10 +747,10 @@
 int
 PyNumber_Check(PyObject *o)
 {
-    return o && Py_TYPE(o)->tp_as_number &&
-           (Py_TYPE(o)->tp_as_number->nb_index ||
-            Py_TYPE(o)->tp_as_number->nb_int ||
-            Py_TYPE(o)->tp_as_number->nb_float);
+    if (o == NULL)
+        return 0;
+    PyNumberMethods *nb = Py_TYPE(o)->tp_as_number;
+    return nb && (nb->nb_index || nb->nb_int || nb->nb_float || PyComplex_Check(o));
 }
 
 /* Binary operators */
@@ -1461,7 +1461,7 @@
     }
 
     return type_error("int() argument must be a string, a bytes-like object "
-                      "or a number, not '%.200s'", o);
+                      "or a real number, not '%.200s'", o);
 }
 
 PyObject *