diff --git a/sys/fs/devfs/devfs_vfsops.c b/sys/fs/devfs/devfs_vfsops.c
index b93f123f39a4..7bf4190caa9e 100644
--- a/sys/fs/devfs/devfs_vfsops.c
+++ b/sys/fs/devfs/devfs_vfsops.c
@@ -79,6 +79,7 @@ devfs_mount(struct mount *mp, struct thread *td)
 	lockinit(&fmp->dm_lock, PVFS, "devfs", 0, 0);
 
 	mp->mnt_flag |= MNT_LOCAL;
+	mp->mnt_kern_flag |= MNTK_MPSAFE;
 #ifdef MAC
 	mp->mnt_flag |= MNT_MULTILABEL;
 #endif