diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c
index afa2959..f4f8059 100644
--- a/fs/ext4/block_validity.c
+++ b/fs/ext4/block_validity.c
@@ -142,7 +142,8 @@
 	struct inode *inode;
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
 	struct ext4_map_blocks map;
-	u32 i = 0, err = 0, num, n;
+	u32 i = 0, num;
+	int err = 0, n;
 
 	if ((ino < EXT4_ROOT_INO) ||
 	    (ino > le32_to_cpu(sbi->s_es->s_inodes_count)))