diff --git a/pcbnew/router/router_tool.cpp b/pcbnew/router/router_tool.cpp
index c62fea076f..950ef65b1e 100644
--- a/pcbnew/router/router_tool.cpp
+++ b/pcbnew/router/router_tool.cpp
@@ -994,7 +994,7 @@ bool ROUTER_TOOL::prepareInteractive()
 
     editFrame->SetActiveLayer( ToLAYER_ID( routingLayer ) );
 
-    if( m_startItem && m_startItem->Net() >= 0 )
+    if( m_startItem && m_startItem->Net() > 0 )
         highlightNet( true, m_startItem->Net() );
 
     controls()->ForceCursorPosition( false );
@@ -1389,7 +1389,7 @@ void ROUTER_TOOL::performDragging( int aMode )
     if( !dragStarted )
         return;
 
-    if( m_startItem && m_startItem->Net() >= 0 )
+    if( m_startItem && m_startItem->Net() > 0 )
         highlightNet( true, m_startItem->Net() );
 
     ctls->SetAutoPan( true );