diff --git a/views/ngXosViews/diagnostic/src/js/subscriber-modal.js b/views/ngXosViews/diagnostic/src/js/subscriber-modal.js
index 2911733..47b6a8d 100644
--- a/views/ngXosViews/diagnostic/src/js/subscriber-modal.js
+++ b/views/ngXosViews/diagnostic/src/js/subscriber-modal.js
@@ -42,6 +42,9 @@
         });
 
         $scope.$watch(() => this.subscriber, () => {
+          if(!this.subscriber){
+            return;
+          }
           this.subscriber.uplink_speed = parseInt(this.subscriber.uplink_speed, 10);
           this.subscriber.downlink_speed = parseInt(this.subscriber.downlink_speed, 10);
         });