diff --git a/web/gui/src/main/webapp/app/fw/svg/icon.js b/web/gui/src/main/webapp/app/fw/svg/icon.js
index 15b44bc..1253636 100644
--- a/web/gui/src/main/webapp/app/fw/svg/icon.js
+++ b/web/gui/src/main/webapp/app/fw/svg/icon.js
@@ -37,6 +37,8 @@
         play: 'play',
         stop: 'stop',
 
+        topo: 'topo',
+
         refresh: 'refresh',
         garbage: 'garbage',