diff --git a/vipra-ui/app/js/controllers.js b/vipra-ui/app/js/controllers.js
index f9e77c957d414bf133148452973a606dcbb68625..c2e873536caf47cc32240e4959527a5784ab63f3 100644
--- a/vipra-ui/app/js/controllers.js
+++ b/vipra-ui/app/js/controllers.js
@@ -279,6 +279,10 @@
             springConstant: 0.008,
             gravitationalConstant: -3500
           }
+        },
+        interaction: {
+          tooltipDelay: 200,
+          hideEdgesOnDrag: true
         }
       };
       $scope.shown = {
diff --git a/vipra-ui/app/js/directives.js b/vipra-ui/app/js/directives.js
index b2e77c97973da39873e9cad5e34b8bf1d7cea57a..779d1e976aee20062d6b0faf3eebcb3b77c2d512 100644
--- a/vipra-ui/app/js/directives.js
+++ b/vipra-ui/app/js/directives.js
@@ -119,8 +119,6 @@
       },
       link: function($scope, $element) {
         $scope.$watch('highcharts', function(newVal) {
-          if (!newVal) return;
-
           $element.highcharts($scope.highcharts);
         });
       }