diff --git a/fs/bcachefs/fs.c b/fs/bcachefs/fs.c
index ec9cf4b8faf1..be0c059d70f0 100644
--- a/fs/bcachefs/fs.c
+++ b/fs/bcachefs/fs.c
@@ -1878,6 +1878,7 @@ static struct dentry *bch2_mount(struct file_system_type *fs_type,
 	sb->s_time_gran		= c->sb.nsec_per_time_unit;
 	sb->s_time_min		= div_s64(S64_MIN, c->sb.time_units_per_sec) + 1;
 	sb->s_time_max		= div_s64(S64_MAX, c->sb.time_units_per_sec);
+	sb->s_uuid		= c->sb.user_uuid;
 	c->vfs_sb		= sb;
 	strscpy(sb->s_id, c->name, sizeof(sb->s_id));