diff --git a/map/benchmark_framework.cpp b/map/benchmark_framework.cpp
index 0b95f31d0b..87d0171395 100644
--- a/map/benchmark_framework.cpp
+++ b/map/benchmark_framework.cpp
@@ -293,7 +293,7 @@ void BenchmarkFramework<TModel>::OnSize(int w, int h)
 }
 
 template <typename TModel>
-void BenchmarkFramework<TModel>::DoPaint(shared_ptr<PaintEvent> e)
+void BenchmarkFramework<TModel>::DoPaint(shared_ptr<PaintEvent> const & e)
 {
   double s = m_benchmarksTimer.ElapsedSeconds();
   Framework<TModel>::DoPaint(e);
diff --git a/map/benchmark_framework.hpp b/map/benchmark_framework.hpp
index 1ddc6c578c..69f24cfe51 100644
--- a/map/benchmark_framework.hpp
+++ b/map/benchmark_framework.hpp
@@ -69,5 +69,5 @@ public:
 
   void OnSize(int w, int h);
 
-  virtual void DoPaint(shared_ptr<PaintEvent> e);
+  virtual void DoPaint(shared_ptr<PaintEvent> const & e);
 };