1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index f9764e61978b..8fad8402fb2e 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -255,7 +255,7 @@ void bch_btree_node_read(struct btree *b)
 
         return;
 err:
-        bch_cache_set_error(b->c, "io error reading bucket %lu",
+        bch_cache_set_error(b->c, "io error reading bucket %zu",
                             PTR_BUCKET_NR(b->c, &b->key, 0));
 }