| Index: lib/requestBlocker.js | 
| diff --git a/lib/requestBlocker.js b/lib/requestBlocker.js | 
| index 91df223d5a1b82d6684d5d20f8a8c44ee7c4ed87..f30e8e55a7b688bda7903b38e8a0891954543ff9 100644 | 
| --- a/lib/requestBlocker.js | 
| +++ b/lib/requestBlocker.js | 
| @@ -152,7 +152,7 @@ FilterNotifier.on("filter.removed", onFilterChange); | 
| FilterNotifier.on("filter.disabled", arg => onFilterChange(arg, true)); | 
| FilterNotifier.on("load", onFilterChange); | 
|  | 
| -port.on("request.websocket", function(msg, sender) | 
| +port.on("request.websocket", (msg, sender) => | 
| { | 
| return ext.webRequest.onBeforeRequest._dispatch( | 
| new URL(msg.url), | 
|  |