diff --git a/sys/sys/sysent.h b/sys/sys/sysent.h
index e593f38e037c..9fc634c3de45 100644
--- a/sys/sys/sysent.h
+++ b/sys/sys/sysent.h
@@ -49,6 +49,7 @@ struct sysent {		/* system call table */
 
 struct image_params;
 struct trapframe;
+struct vnode;
 
 struct sysentvec {
 	int		sv_size;	/* number of entries */