diff --git a/apps/regression/graph_controller.cpp b/apps/regression/graph_controller.cpp
index 7209e37e0..4be142546 100644
--- a/apps/regression/graph_controller.cpp
+++ b/apps/regression/graph_controller.cpp
@@ -87,10 +87,6 @@ void GraphController::viewWillAppear() {
   setRoundCrossCursorView(*m_selectedDotIndex < 0);
 }
 
-void GraphController::selectRegressionCurve() {
-  *m_selectedDotIndex = -1;
-}
-
 // Private
 
 Poincare::Context * GraphController::globalContext() {
diff --git a/apps/regression/graph_controller.h b/apps/regression/graph_controller.h
index 0c35ad9ab..2011c9735 100644
--- a/apps/regression/graph_controller.h
+++ b/apps/regression/graph_controller.h
@@ -21,7 +21,7 @@ public:
   bool isEmpty() const override;
   I18n::Message emptyMessage() override;
   void viewWillAppear() override;
-  void selectRegressionCurve();
+  void selectRegressionCurve() { *m_selectedDotIndex = -1; }
   int selectedSeriesIndex() const { return *m_selectedSeriesIndex; }
 
   // moveCursorHorizontally and Vertically are public to be used in tests