diff --git a/dtool/src/pystub/pystub.cxx b/dtool/src/pystub/pystub.cxx
index 4999032e7f..a01317abab 100644
--- a/dtool/src/pystub/pystub.cxx
+++ b/dtool/src/pystub/pystub.cxx
@@ -40,6 +40,7 @@ extern "C" {
   EXPCL_DTOOLCONFIG int PyLong_AsUnsignedLongLong(...);
   EXPCL_DTOOLCONFIG int PyErr_Occurred(...);
   EXPCL_DTOOLCONFIG int PyObject_GetAttrString(...);
+  EXPCL_DTOOLCONFIG int PyLong_FromUnsignedLong(...);
   EXPCL_DTOOLCONFIG int PyLong_FromUnsignedLongLong(...);
   EXPCL_DTOOLCONFIG int PyTuple_GetItem(...);
   EXPCL_DTOOLCONFIG int PyString_AsString(...);
@@ -164,6 +165,11 @@ PyObject_GetAttrString(...) {
   return 0;
 }
 
+int
+PyLong_FromUnsignedLong(...) {
+  return 0;
+}
+
 int
 PyLong_FromUnsignedLongLong(...) {
   return 0;