diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index aac403085be5945a9f6b25a56d7650f919179efe..ccc4cdb1efe9a9e7842718ef24407557b73b382d 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2115,7 +2115,7 @@ static inline void nfs_initialise_sb(struct super_block *sb)
 
 	/* We probably want something more informative here */
 	snprintf(sb->s_id, sizeof(sb->s_id),
-		 "%x:%x", MAJOR(sb->s_dev), MINOR(sb->s_dev));
+		 "%u:%u", MAJOR(sb->s_dev), MINOR(sb->s_dev));
 
 	if (sb->s_blocksize == 0)
 		sb->s_blocksize = nfs_block_bits(server->wsize,