diff --git a/src/lib/adblock/adblockmanager.cpp b/src/lib/adblock/adblockmanager.cpp
index d68f6a357..218446489 100644
--- a/src/lib/adblock/adblockmanager.cpp
+++ b/src/lib/adblock/adblockmanager.cpp
@@ -85,9 +85,9 @@ QNetworkReply* AdBlockManager::block(const QNetworkRequest &request)
     QElapsedTimer timer;
     timer.start();
 #endif
-    const QString &urlString = request.url().toEncoded();
-    const QString &urlDomain = request.url().host();
-    const QString &urlScheme = request.url().scheme();
+    const QString &urlString = request.url().toEncoded().toLower();
+    const QString &urlDomain = request.url().host().toLower();
+    const QString &urlScheme = request.url().scheme().toLower();
 
     if (!isEnabled() || !canRunOnScheme(urlScheme)) {
         return 0;