diff --git a/routing/routing_session.cpp b/routing/routing_session.cpp
index 133e5b8c83..de850162ef 100644
--- a/routing/routing_session.cpp
+++ b/routing/routing_session.cpp
@@ -593,7 +593,7 @@ void RoutingSession::OnTrafficInfoAdded(TrafficInfo && info)
   ASSERT_EQUAL(kSpeedGroupThresholdPercentage[static_cast<size_t>(SpeedGroup::Unknown)], 100, ());
 
   // The code below is memory optimization. Edges with traffic SpeedGroup::G5 and
-  // SpeedGroup::Unknown are 95% of all edges but they are not used in routing now.
+  // SpeedGroup::Unknown constitute a large part of all edges but they are not used in routing now.
   // So we don't need to keep the information in TrafficCache.
   TrafficInfo::Coloring const & fullColoring = info.GetColoring();
   TrafficInfo::Coloring coloring;