diff --git a/generator/feature_sorter.cpp b/generator/feature_sorter.cpp
index b5997d1566..5d555b3d52 100644
--- a/generator/feature_sorter.cpp
+++ b/generator/feature_sorter.cpp
@@ -427,7 +427,8 @@ namespace feature
       }
       */
 
-      for (int i = m_header.GetScalesCount()-1; i >= 0; --i)
+      int const scalesStart = m_header.GetScalesCount() - 1;
+      for (int i = scalesStart; i >= 0; --i)
       {
         int const level = m_header.GetScale(i);
         if (fb.IsDrawableInRange(i > 0 ? m_header.GetScale(i-1) + 1 : 0, level))
@@ -436,9 +437,14 @@ namespace feature
           bool const isCoast = fb.GetCoastCell(dummy);
           m2::RectD const rect = fb.GetLimitRect();
 
-          // simplify and serialize geometry
+          // Simplify and serialize geometry.
           points_t points;
-          SimplifyPoints(holder.GetSourcePoints(), points, level, isCoast, rect);
+
+          // Do not change linear geometry for the upper scale.
+          if (isLine && i == scalesStart)
+            points = holder.GetSourcePoints();
+          else
+            SimplifyPoints(holder.GetSourcePoints(), points, level, isCoast, rect);
 
           if (isLine)
             holder.AddPoints(points, i);