diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2PeerRegion.js b/web/gui/src/main/webapp/app/view/topo2/topo2PeerRegion.js
index 64dc954..469e0a8 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2PeerRegion.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2PeerRegion.js
@@ -77,7 +77,6 @@
                         if (d3.event.defaultPrevented) return;
 
                         wss.sendEvent('topo2navRegion', {
-                            dir: 'down',
                             rid: this.get('id')
                         });
 
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2SubRegion.js b/web/gui/src/main/webapp/app/view/topo2/topo2SubRegion.js
index 4696050..c773539 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2SubRegion.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2SubRegion.js
@@ -77,7 +77,6 @@
                     if (d3.event.defaultPrevented) return;
 
                     wss.sendEvent('topo2navRegion', {
-                        dir: 'down',
                         rid: this.get('id')
                     });