diff --git a/src/js/reverselookup-worker.js b/src/js/reverselookup-worker.js
index 35b86ad57..1f14dd4ef 100644
--- a/src/js/reverselookup-worker.js
+++ b/src/js/reverselookup-worker.js
@@ -163,7 +163,7 @@ const fromExtendedFilter = function(details) {
     const regexTargetMatchesURL = target => {
         const pathPos = target.indexOf('\\/');
         if ( pathPos === -1 ) {
-            return regexTargetMatchesHostname(target.slice(1, -1));
+            return regexTargetMatchesHostname(target);
         }
         return regexTargetMatchesHostname(`${target.slice(1, pathPos)}$`) &&
             (new RegExp(`^${target.slice(pathPos, -1)}`)).test(pathname);