diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 29026ba4f022..84e855e8929b 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -1220,6 +1220,7 @@ static int ceph_set_super(struct super_block *s, struct fs_context *fc)
 	s->s_time_min = 0;
 	s->s_time_max = U32_MAX;
 	s->s_flags |= SB_NODIRATIME | SB_NOATIME;
+	s->s_magic = CEPH_SUPER_MAGIC;
 
 	ceph_fscrypt_set_ops(s);