diff --git a/src/Processors/Merges/Algorithms/FinishAggregatingInOrderAlgorithm.h b/src/Processors/Merges/Algorithms/FinishAggregatingInOrderAlgorithm.h
index 29209f462e4..8b83e4e215b 100644
--- a/src/Processors/Merges/Algorithms/FinishAggregatingInOrderAlgorithm.h
+++ b/src/Processors/Merges/Algorithms/FinishAggregatingInOrderAlgorithm.h
@@ -40,7 +40,7 @@ public:
         AggregatingTransformParamsPtr params_,
         SortDescription description_,
         size_t max_block_size_,
-        size_t max_threads_);
+        size_t merge_threads_);
 
     void initialize(Inputs inputs) override;
     void consume(Input & input, size_t source_num) override;