diff --git a/gui/ngXosViews/serviceTopology/src/js/config.js b/gui/ngXosViews/serviceTopology/src/js/config.js
index 3ef8748..347feb9 100644
--- a/gui/ngXosViews/serviceTopology/src/js/config.js
+++ b/gui/ngXosViews/serviceTopology/src/js/config.js
@@ -5,7 +5,11 @@
   .constant('serviceTopologyConfig', {
     widthMargin: 100,
     heightMargin: 30,
-    duration: 750
+    duration: 750,
+    circle: {
+      radius: 10,
+      selectedRadius: 15
+    }
   })
 
 }());
\ No newline at end of file