diff --git a/fs/zfs/dev.c b/fs/zfs/dev.c
index 251e7d1f74..fcd9893b3a 100644
--- a/fs/zfs/dev.c
+++ b/fs/zfs/dev.c
@@ -26,5 +26,5 @@ void zfs_set_blk_dev(struct blk_desc *rbdd, struct disk_partition *info)
 int zfs_devread(int sector, int byte_offset, int byte_len, char *buf)
 {
 	return fs_devread(zfs_blk_desc, part_info, sector, byte_offset,
-			  byte_len, buf);
+			  byte_len, buf) ? 0 : 1;
 }