diff --git a/sys/kern/vfs_mount.c b/sys/kern/vfs_mount.c
index 2b235d39833..4961eb33247 100644
--- a/sys/kern/vfs_mount.c
+++ b/sys/kern/vfs_mount.c
@@ -1517,7 +1517,7 @@ vfs_domount_update(
 
 	MNT_ILOCK(mp);
 	if (error == 0) {
-		mp->mnt_flag &=	~(MNT_UPDATE | MNT_RELOAD | MNT_FORCE |
+		mp->mnt_flag &= ~(MNT_UPDATE | MNT_RELOAD | MNT_FORCE |
 		    MNT_SNAPSHOT);
 	} else {
 		/*