diff --git a/generator/booking_quality_check/booking_quality_check.cpp b/generator/booking_quality_check/booking_quality_check.cpp
index 1621179460..c12cefcb5b 100644
--- a/generator/booking_quality_check/booking_quality_check.cpp
+++ b/generator/booking_quality_check/booking_quality_check.cpp
@@ -117,11 +117,6 @@ public:
       m_features.emplace(fb.GetMostGenericOsmId(), fb);
   }
 
-  void EmitCityBoundary(FeatureBuilder1 const & /* fb */,
-                        FeatureParams const & /* params */) override
-  {
-  }
-
   void GetNames(vector<string> & names) const override
   {
     names.clear();
diff --git a/generator/osm_source.hpp b/generator/osm_source.hpp
index 5c59180c20..779c81efb0 100644
--- a/generator/osm_source.hpp
+++ b/generator/osm_source.hpp
@@ -45,7 +45,7 @@ public:
   /// This method is used by OsmTranslator to pass |fb| to Emitter for further processing.
   virtual void operator()(FeatureBuilder1 & fb) = 0;
 
-  virtual void EmitCityBoundary(FeatureBuilder1 const & fb, FeatureParams const & params) = 0;
+  virtual void EmitCityBoundary(FeatureBuilder1 const & fb, FeatureParams const & params) {}
 
   /// Finish is used in GenerateFeatureImpl to make whatever work is needed after
   /// all OmsElements are processed.