diff --git a/html/includes/print-map.inc.php b/html/includes/print-map.inc.php
index e7c983681..b5f5de848 100644
--- a/html/includes/print-map.inc.php
+++ b/html/includes/print-map.inc.php
@@ -169,7 +169,7 @@ foreach ($list as $items) {
     $tmp_links[] = array('from'=>$items['local_device_id'],'to'=>$items['remote_device_id'],'label'=>shorten_interface_type($items['local_ifname']) . ' > ' . shorten_interface_type($items['remote_ifname']),'title'=>generate_port_link($local_port, "<img src='graph.php?type=port_bits&amp;id=".$items['local_port_id']."&amp;from=".$config['time']['day']."&amp;to=".$config['time']['now']."&amp;width=100&amp;height=20&amp;legend=no&amp;bg=".str_replace("#","", $row_colour)."'>",'',0,1),'width'=>$width,'color'=>$link_color);
     $id1 = $items['local_port_id'].':'.$items['remote_port_id'];
     $id2 = $items['remote_port_id'].':'.$items['local_port_id'];
-    if (!in_array($id1,$tmp_link_ids) && !in_array($id2,$tmp_link_ids)) {
+    if (!in_array($id1,$tmp_link_ids) || !in_array($id2,$tmp_link_ids)) {
         $tmp_links[] = array('from'=>$items['local_device_id'],'to'=>$items['remote_device_id'],'label'=>shorten_interface_type($items['local_ifname']) . ' > ' . shorten_interface_type($items['remote_ifname']),'title'=>generate_port_link($local_port, "<img src='graph.php?type=port_bits&amp;id=".$items['local_port_id']."&amp;from=".$config['time']['day']."&amp;to=".$config['time']['now']."&amp;width=100&amp;height=20&amp;legend=no&amp;bg=".str_replace("#","", $row_colour)."'>\n",'',0,1),'width'=>$width,'color'=>$link_color);
     }
     array_push($tmp_link_ids,$id1);