diff --git a/usr.bin/yacc/defs.h b/usr.bin/yacc/defs.h
index 5219e1b6623e..772e9129caaa 100644
--- a/usr.bin/yacc/defs.h
+++ b/usr.bin/yacc/defs.h
@@ -220,7 +220,6 @@ extern char tflag;
 extern char vflag;
 extern const char *symbol_prefix;
 
-extern char *myname;
 extern char *cptr;
 extern char *line;
 extern int lineno;