--- src/lex.l
+++ src/lex.l
@@ -16,7 +16,7 @@
 int linec;
 #include "util.h"
 extern list_t *root_list;
-void yyparse(void);
+/* int yyparse(void); */
 void free_conf(list_t*);
 int conf_error;
 typedef struct bip bip_t;
--- src/bip.c
+++ src/bip.c
@@ -123,7 +123,7 @@
 #define ERRBUFSZ 128
 
 extern list_t *root_list;
-int yyparse();
+/* int yyparse(); */
 
 void conf_die(bip_t *bip, char *fmt, ...)
 {