diff --git a/src/Network/Network.js b/src/Network/Network.js
index a711ba2..8ac3bfe 100644
--- a/src/Network/Network.js
+++ b/src/Network/Network.js
@@ -170,10 +170,10 @@ export default class Network extends Tool
     _getPerformanceTimingData()
     {
         let performance = this._performance;
-
         if (!performance) return;
 
         let timing = performance.timing;
+        if (!timing) return;
 
         let data = [];