diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 70b3dbb4de128ea76a269e72fbd1cce8ff4093e3..0f2a9b584fb67cbeb7f42b6bca2a8584fc5bf88f 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -39,7 +39,7 @@ extern struct kmem_cache *btrfs_bit_radix_cachep;
 extern struct kmem_cache *btrfs_path_cachep;
 struct btrfs_ordered_sum;
 
-#define BTRFS_MAGIC "_BDRfS_M"
+#define BTRFS_MAGIC "_BFRfS_M"
 
 #define BTRFS_ACL_NOT_CACHED    ((void *)-1)