diff --git a/src/route/map.hpp b/src/route/map.hpp
index 09cdeee..8f7d0f4 100644
--- a/src/route/map.hpp
+++ b/src/route/map.hpp
@@ -71,6 +71,8 @@
     return m_table.size();
   }
 
+  void
+  writeLog();
 
 private:
   bool
@@ -80,8 +82,5 @@
   std::list<MapEntry> m_table;
 };
 
-std::ostream&
-operator<<(std::ostream& os, Map& map);
-
 } // namespace nlsr
 #endif //NLSR_MAP_HPP