diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index a2cff2b..4bbd07a 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -407,7 +407,7 @@
 	if (!buffer_uptodate(bh)) {
 		ext4_error(sb, "Cannot read block bitmap - "
 			   "block_group = %u, block_bitmap = %llu",
-			   block_group, bh->b_blocknr);
+			   block_group, (unsigned long long) bh->b_blocknr);
 		return 1;
 	}
 	clear_buffer_new(bh);