diff --git a/graph/iterator/mock_ts_test.go b/graph/iterator/mock_ts_test.go
index 2a1407b..8923a69 100644
--- a/graph/iterator/mock_ts_test.go
+++ b/graph/iterator/mock_ts_test.go
@@ -35,7 +35,7 @@ func (qs *store) ValueOf(s string) graph.Value {
 	return nil
 }
 
-func (qs *store) ApplyDeltas([]graph.Delta) error { return nil }
+func (qs *store) ApplyDeltas([]graph.Delta, bool, bool) error { return nil }
 
 func (qs *store) Quad(graph.Value) quad.Quad { return quad.Quad{} }