diff --git a/inject.js b/inject.js
index e46d0f9..5f32590 100644
--- a/inject.js
+++ b/inject.js
@@ -44,6 +44,9 @@ chrome.extension.sendMessage({}, function(response) {
         });
 
         target.addEventListener('ratechange', function(event) {
+          if (target.readyState === 0) {
+            return;
+          }
           var speed = this.getSpeed();
           this.speedIndicator.textContent = speed;
           tc.settings.speed = speed;