diff --git a/plasma-integration/plasmoid/package/contents/ui/main.qml b/plasma-integration/plasmoid/package/contents/ui/main.qml
index 9f03da6..b3f6e00 100644
--- a/plasma-integration/plasmoid/package/contents/ui/main.qml
+++ b/plasma-integration/plasmoid/package/contents/ui/main.qml
@@ -69,11 +69,11 @@ Item {
         engine: "powermanagement"
         connectedSources: ["PowerDevil", "Inhibitions"]
 
-        onSourceAdded: {
+        onSourceAdded: source => {
             disconnectSource(source);
             connectSource(source);
         }
-        onSourceRemoved: {
+        onSourceRemoved: source => {
             disconnectSource(source);
         }