diff --git a/block/qcow2.c b/block/qcow2.c
index 38e7fdc..461cc7a 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -706,8 +706,8 @@
 {
     BlockDriverState *bs = opaque;
     BDRVQcow2State *s = bs->opaque;
-    qcow2_cache_clean_unused(bs, s->l2_table_cache);
-    qcow2_cache_clean_unused(bs, s->refcount_block_cache);
+    qcow2_cache_clean_unused(s->l2_table_cache);
+    qcow2_cache_clean_unused(s->refcount_block_cache);
     timer_mod(s->cache_clean_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) +
               (int64_t) s->cache_clean_interval * 1000);
 }