--- a/mercurial/cext/revlog.h	Sun Dec 02 21:37:42 2018 +0900
+++ b/mercurial/cext/revlog.h	Sun Dec 02 21:41:24 2018 +0900
@@ -10,6 +10,6 @@
 
 #include <Python.h>
 
-extern PyTypeObject indexType;
+extern PyTypeObject HgRevlogIndex_Type;
 
 #endif /* _HG_REVLOG_H_ */