diff --git a/map/framework.cpp b/map/framework.cpp
index 2dd1754367..292140a2ba 100644
--- a/map/framework.cpp
+++ b/map/framework.cpp
@@ -2986,7 +2986,7 @@ bool Framework::OriginalFeatureHasDefaultName(FeatureID const & fid) const
 
 bool Framework::HasRouteAltitude() const { return m_routingSession.HasRouteAltitude(); }
 
-bool Framework::GenerateRouteAltitudeChart(size_t width, size_t height, bool day,
+bool Framework::GenerateRouteAltitudeChart(size_t width, size_t height,
                                            vector<uint8_t> & imageRGBAData) const
 {
   feature::TAltitudes altitudes;
@@ -3004,6 +3004,7 @@ bool Framework::GenerateRouteAltitudeChart(size_t width, size_t height, bool day
     return false;
   }
 
+  bool day = (GetMapStyle() != MapStyleDark);
   GenerateChart(width, height, segDistanceM, altitudes, day, imageRGBAData);
   return true;
 }
diff --git a/map/framework.hpp b/map/framework.hpp
index b96e06b3b1..a1d6bbd0c3 100644
--- a/map/framework.hpp
+++ b/map/framework.hpp
@@ -726,7 +726,7 @@ public:
   void SaveAutoZoom(bool allowAutoZoom);
 
   bool HasRouteAltitude() const;
-  bool GenerateRouteAltitudeChart(size_t width, size_t height, bool day,
+  bool GenerateRouteAltitudeChart(size_t width, size_t height,
                                   vector<uint8_t> & imageRGBAData) const;
 
 public: