diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2Layout.js b/web/gui/src/main/webapp/app/view/topo2/topo2Layout.js
index a02a844..4cd86cc 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2Layout.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2Layout.js
@@ -438,6 +438,7 @@
                     init: init,
                     createForceLayout: createForceLayout,
                     update: update,
+                    tick: tick,
                     start: start,
 
                     setDimensions: setDimensions