diff --git a/sys/sys/conf.h b/sys/sys/conf.h
index 4cfb74476b0a..69896e86ccfe 100644
--- a/sys/sys/conf.h
+++ b/sys/sys/conf.h
@@ -285,7 +285,6 @@ int	make_dev_physpath_alias(int _flags, struct cdev **_cdev,
 		const char *_physpath);
 void	dev_lock(void);
 void	dev_unlock(void);
-void	setconf(void);
 
 #ifdef KLD_MODULE
 #define	MAKEDEV_ETERNAL_KLD	0