diff --git a/pkg/local_object_storage/shard/delete_test.go b/pkg/local_object_storage/shard/delete_test.go
index 846cb0e3..f7687e96 100644
--- a/pkg/local_object_storage/shard/delete_test.go
+++ b/pkg/local_object_storage/shard/delete_test.go
@@ -61,6 +61,7 @@ func testShard(t *testing.T, hasWriteCache bool, payloadSize int) {
 	require.NoError(t, err)
 
 	if hasWriteCache {
+		sh.FlushWriteCache(context.Background(), FlushWriteCachePrm{ignoreErrors: false})
 		require.Eventually(t, func() bool {
 			_, err = sh.Delete(context.Background(), delPrm)
 			return err == nil