diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index efc1179..16aa8a2 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -1168,6 +1168,14 @@ int qcow2_check_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
         goto fail;
     }
 
+    if (s->has_dedup) {
+        ret = check_refcounts_l1(bs, res, refcount_table, nb_clusters,
+                                 s->dedup_table_offset, s->dedup_table_size, 0);
+        if (ret < 0) {
+            goto fail;
+        }
+    }
+
     /* snapshots */
     for(i = 0; i < s->nb_snapshots; i++) {
         sn = s->snapshots + i;