diff --git a/usr.bin/mkesdb/ldef.h b/usr.bin/mkesdb/ldef.h
index a14277cc5871..0c5e76a25b12 100644
--- a/usr.bin/mkesdb/ldef.h
+++ b/usr.bin/mkesdb/ldef.h
@@ -30,7 +30,6 @@
 extern int	 line_number;
 extern int	 yyerror(const char *);
 extern int	 yylex(void);
-extern int	 yyparse(void);
 
 struct named_csid {
 	STAILQ_ENTRY(named_csid)	 ci_entry;