diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index dc6697cfae0ca62a553d304710d5bae956d29c2c..0577d7f4c442d307ad750ef7f52b6d1917dd5a37 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -6520,6 +6520,9 @@ int btrfs_read_sys_array(struct btrfs_root *root)
 			if (ret)
 				break;
 		} else {
+			printk(KERN_ERR
+		"BTRFS: unexpected item type %u in sys_array at offset %u\n",
+				(u32)key.type, cur_offset);
 			ret = -EIO;
 			break;
 		}