diff --git a/sys/sys/vnode.h b/sys/sys/vnode.h
index ee2b22ee9c1..e48d392ce5f 100644
--- a/sys/sys/vnode.h
+++ b/sys/sys/vnode.h
@@ -366,7 +366,6 @@ extern	int desiredvnodes;		/* number of vnodes desired */
 extern	struct uma_zone *namei_zone;
 extern	int prtactive;			/* nonzero to call vprint() */
 extern	struct vattr va_null;		/* predefined null vattr structure */
-extern	int vfs_ioopt;
 
 /*
  * Macro/function to check for client cache inconsistency w.r.t. leasing.