diff --git a/include/geometry/shape_line_chain.h b/include/geometry/shape_line_chain.h
index da6dbee215..795d0012e0 100644
--- a/include/geometry/shape_line_chain.h
+++ b/include/geometry/shape_line_chain.h
@@ -132,7 +132,7 @@ public:
     {
         m_points.reserve( aPath.size() );
 
-        for( auto point : aPath )
+        for( const auto& point : aPath )
             m_points.emplace_back( point.X, point.Y );
     }