diff --git a/pcbnew/router/pns_topology.cpp b/pcbnew/router/pns_topology.cpp
index 5eca29b31c..ea7d16e1cd 100644
--- a/pcbnew/router/pns_topology.cpp
+++ b/pcbnew/router/pns_topology.cpp
@@ -47,8 +47,8 @@ bool TOPOLOGY::SimplifyLine( LINE* aLine )
 
     if( simplified.PointCount() != l.PointCount() )
     {
-        LINE lnew( l );
         m_world->Remove( l );
+        LINE lnew( l );
         lnew.SetShape( simplified );
         m_world->Add( lnew );
         return true;