diff --git a/src/webui/service/templates/js/topology.js b/src/webui/service/templates/js/topology.js
index 69de0445dac24bf2f7f16ec21da4a6d35133e9da..29156224da2245cd1db75c4384c66b6643130f4c 100644
--- a/src/webui/service/templates/js/topology.js
+++ b/src/webui/service/templates/js/topology.js
@@ -89,6 +89,8 @@ d3.json("{{ url_for('main.topology') }}", function(data) {
 
     // node tooltip
     node.append("title").text(function(d) { return d.id; });
+    // link tooltip
+    link.append("title").text(function(d) { return d.id; });
 
     // link style
     link