diff --git a/Parser/pgenmain.c b/Parser/pgenmain.c
index 9ed8cab..9441e58 100644
--- a/Parser/pgenmain.c
+++ b/Parser/pgenmain.c
@@ -50,6 +50,7 @@
 #include "pgen.h"
 
 int Py_DebugFlag;
+int Py_VerboseFlag;
 
 /* Forward */
 grammar *getgrammar Py_PROTO((char *filename));