diff --git a/GeoLib/Polyline.h b/GeoLib/Polyline.h
index 731c229b7c3a8d166976e1b124c7f263c900eb00..dbf8128ab478818ad59874ef08fa10b827b7a9fc 100644
--- a/GeoLib/Polyline.h
+++ b/GeoLib/Polyline.h
@@ -215,7 +215,6 @@ public:
     double getDistanceAlongPolyline(const MathLib::Point3d& pnt,
         const double epsilon_radius) const;
 
-    friend bool operator==(Polyline const& lhs, Polyline const& rhs);
 protected:
     /**
      * 2D method - ignores z coordinate. It calculates the location