diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c
index 740123f..18a9ac3 100644
--- a/sys/kern/vfs_vnops.c
+++ b/sys/kern/vfs_vnops.c
@@ -195,7 +195,10 @@ vn_open_cred(struct nameidata *ndp, int *flagp, int cmode, u_int vn_open_flags,
 
 restart:
 	fmode = *flagp;
-	if (fmode & O_CREAT) {
+	if ((fmode & (O_CREAT | O_EXCL | O_DIRECTORY)) == (O_CREAT |
+	    O_EXCL | O_DIRECTORY))
+		return (EINVAL);
+	else if ((fmode & (O_CREAT | O_DIRECTORY)) == O_CREAT) {
 		ndp->ni_cnd.cn_nameiop = CREATE;
 		/*
 		 * Set NOCACHE to avoid flushing the cache when