diff --git a/generator/booking_dataset.cpp b/generator/booking_dataset.cpp
index 124c708897..caeaff88d1 100644
--- a/generator/booking_dataset.cpp
+++ b/generator/booking_dataset.cpp
@@ -223,7 +223,8 @@ void BookingDataset::BuildFeatures(function<void(OsmElement *)> const & fn) cons
   }
 }
 
-static double BookingDataset::ScoreByLinearNormDistance(double distance) const
+// static
+double BookingDataset::ScoreByLinearNormDistance(double distance)
 {
   distance = my::clamp(distance, 0, kDistanceLimitInMeters);
   return 1.0 - distance / kDistanceLimitInMeters;
diff --git a/generator/booking_dataset.hpp b/generator/booking_dataset.hpp
index b6367081a6..7d5c48cd59 100644
--- a/generator/booking_dataset.hpp
+++ b/generator/booking_dataset.hpp
@@ -69,7 +69,7 @@ public:
 
   void BuildFeatures(function<void(OsmElement *)> const & fn) const;
 
-  static double ScoreByLinearNormDistance(double distance) const;
+  static double ScoreByLinearNormDistance(double distance);
 
 protected:
   vector<Hotel> m_hotels;