diff --git a/fs/btrfs/free-space-cache.h b/fs/btrfs/free-space-cache.h
index cab954a9d97b9d87b1edd88cbb8d11ab1a99d8d6..a855e0483e03d92fbd3dbbf8407c6221ee0903f0 100644
--- a/fs/btrfs/free-space-cache.h
+++ b/fs/btrfs/free-space-cache.h
@@ -48,9 +48,11 @@ static inline bool btrfs_free_space_trimming_bitmap(
  * to make it clear what we're doing.  An example is discard_extents in
  * btrfs_free_space_ctl.
  */
-#define BTRFS_STAT_NR_ENTRIES	2
-#define BTRFS_STAT_CURR		0
-#define BTRFS_STAT_PREV		1
+enum {
+	BTRFS_STAT_CURR,
+	BTRFS_STAT_PREV,
+	BTRFS_STAT_NR_ENTRIES,
+};
 
 struct btrfs_free_space_ctl {
 	spinlock_t tree_lock;