diff --git a/kcmkwin/kwindesktop/main.cpp b/kcmkwin/kwindesktop/main.cpp
--- a/kcmkwin/kwindesktop/main.cpp
+++ b/kcmkwin/kwindesktop/main.cpp
@@ -571,11 +571,17 @@
     };
     if (fromKService) {
         KServiceTypeTrader* trader = KServiceTypeTrader::self();
-        KService::List services;
-        services = trader->query("KWin/Effect", "[X-KDE-PluginInfo-Name] == 'kwin4_effect_" + effect + '\'');
-        if (services.isEmpty())
+        const KService::List services = trader->query(
+            QStringLiteral("KWin/Effect"),
+            QStringLiteral("[X-KDE-PluginInfo-Name] == 'kwin4_effect_%1'").arg(effect));
+        if (services.isEmpty()) {
             return;
-        KPluginInfo pluginInfo(services.first());
+        }
+        const QString effectPluginPath = QStandardPaths::locate(
+            QStandardPaths::GenericDataLocation,
+            QStringLiteral("kservices5/") + services.first()->entryPath(),
+            QStandardPaths::LocateFile);
+        const KPluginInfo pluginInfo(effectPluginPath);
 
         const QString name    = pluginInfo.name();
         const QString comment = pluginInfo.comment();