diff --git a/dbms/src/Interpreters/Aggregator.h b/dbms/src/Interpreters/Aggregator.h
index 983f34c1933..8c67271b1d5 100644
--- a/dbms/src/Interpreters/Aggregator.h
+++ b/dbms/src/Interpreters/Aggregator.h
@@ -120,9 +120,10 @@ private:
 template <typename Base>
 struct AggregationDataWithNullKeyTwoLevel : public Base
 {
-    using Base::Base;
     using Base::impls;
 
+    AggregationDataWithNullKeyTwoLevel() {}
+
     template <typename Other>
     explicit AggregationDataWithNullKeyTwoLevel(const Other & other) : Base(other)
     {