diff --git a/drivers/block/zram/zram_group/group_writeback.c b/drivers/block/zram/zram_group/group_writeback.c
index ceeb5cf4321db059f0b52ed441f80b44448d5152..97e4c8add8632c66d1048cb8a2ab396e1b1513e7 100644
--- a/drivers/block/zram/zram_group/group_writeback.c
+++ b/drivers/block/zram/zram_group/group_writeback.c
@@ -200,7 +200,7 @@ static bool move_extent_from_hpio(struct zram *zram, struct hpio *hpio)
 	u32 idxs[NR_ISOLATE];
 	u32 eid;
 	u32 nr;
-	int i;
+	u32 i;
 	bool last = false;
 
 	eid = hyperhold_io_extent(hpio);