diff --git a/pcbnew/router/pns_dragger.cpp b/pcbnew/router/pns_dragger.cpp
index 2f24803f74..85b3003550 100644
--- a/pcbnew/router/pns_dragger.cpp
+++ b/pcbnew/router/pns_dragger.cpp
@@ -206,6 +206,7 @@ bool DRAGGER::dragMarkObstacles( const VECTOR2I& aP )
         LINE origLine( m_draggedLine );
         LINE dragged( m_draggedLine );
         dragged.SetSnapThreshhold( thresh );
+        dragged.ClearSegmentLinks();
 
         if( m_mode == DM_SEGMENT )
             dragged.DragSegment( aP, m_draggedSegmentIndex );