diff --git a/routing/cross_mwm_index_graph.hpp b/routing/cross_mwm_index_graph.hpp
index 8986a7224f..809bd7fd60 100644
--- a/routing/cross_mwm_index_graph.hpp
+++ b/routing/cross_mwm_index_graph.hpp
@@ -191,6 +191,11 @@ private:
     if (!one.IsRealSegment() || !two.IsRealSegment())
       return true;
 
+    static_assert(std::is_same<CrossMwmId, base::GeoObjectId>::value ||
+                  std::is_same<CrossMwmId, connector::TransitId>::value,
+                  "Be careful of usage other ids here. "
+                  "Make sure, there is not crash with your new CrossMwmId");
+
     std::vector<m2::PointD> geometryOne = GetFeaturePointsBySegment(one);
     std::vector<m2::PointD> geometryTwo = GetFeaturePointsBySegment(two);