diff --git a/dbms/src/Client/Benchmark.cpp b/dbms/src/Client/Benchmark.cpp
index fccdcb532d0..ae9b3180d41 100644
--- a/dbms/src/Client/Benchmark.cpp
+++ b/dbms/src/Client/Benchmark.cpp
@@ -206,7 +206,7 @@ private:
 
 		size_t rows = 0;
 		size_t bytes = 0;
-		stream.setProgressCallback([&](size_t rows_inc , size_t bytes_inc) { rows += rows_inc; bytes += bytes_inc; });
+		stream.setProgressCallback([&](size_t rows_inc, size_t bytes_inc) { rows += rows_inc; bytes += bytes_inc; });
 
 		stream.readPrefix();
 		while (Block block = stream.read())