diff --git a/routing/index_router.cpp b/routing/index_router.cpp
index da00d6813a..2e14b185e1 100644
--- a/routing/index_router.cpp
+++ b/routing/index_router.cpp
@@ -1610,7 +1610,7 @@ void IndexRouter::FillSpeedCamProhibitedMwms(vector<Segment> const & segments,
   }
 }
 
-void IndexRouter::SetupAlgorithmMode(IndexGraphStarter & starter, bool guidesActive)
+void IndexRouter::SetupAlgorithmMode(IndexGraphStarter & starter, bool guidesActive) const
 {
   // We use NoLeaps for pedestrians and bicycles with route points near to the Guides tracks
   // because it is much easier to implement. Otherwise for pedestrians and bicycles we use Joints.
diff --git a/routing/index_router.hpp b/routing/index_router.hpp
index 99501edf35..8443991451 100644
--- a/routing/index_router.hpp
+++ b/routing/index_router.hpp
@@ -216,7 +216,7 @@ private:
         mwmIds, ConvertResult<Vertex, Edge, Weight>(algorithm.FindPathBidirectional(params, routingResult)));
   }
 
-  void SetupAlgorithmMode(IndexGraphStarter & starter, bool guidesActive = false);
+  void SetupAlgorithmMode(IndexGraphStarter & starter, bool guidesActive = false) const;
   uint32_t ConnectTracksOnGuidesToOsm(std::vector<m2::PointD> const & checkpoints,
                                       WorldGraph & graph);