diff --git a/applets/systemtray/package/contents/applet/CompactApplet.qml b/applets/systemtray/package/contents/applet/CompactApplet.qml
--- a/applets/systemtray/package/contents/applet/CompactApplet.qml
+++ b/applets/systemtray/package/contents/applet/CompactApplet.qml
@@ -44,7 +44,9 @@
 
     Connections {
         target: plasmoid
-        onContextualActionsAboutToShow: appletRoot.hideToolTip()
+        function onContextualActionsAboutToShow() {
+            appletRoot.hideToolTip()
+        }
     }
 
     Layout.minimumWidth: {
diff --git a/applets/systemtray/package/contents/ui/items/PlasmoidItem.qml b/applets/systemtray/package/contents/ui/items/PlasmoidItem.qml
--- a/applets/systemtray/package/contents/ui/items/PlasmoidItem.qml
+++ b/applets/systemtray/package/contents/ui/items/PlasmoidItem.qml
@@ -70,9 +70,11 @@
 
     Connections {
         target: applet
-        onActivated: plasmoidContainer.activated()
+        function onActivated() {
+            plasmoidContainer.activated()
+        }
 
-        onExpandedChanged: {
+        function onExpandedChanged(expanded) {
             if (expanded) {
                 var oldApplet = root.activeApplet;
                 root.activeApplet = applet;
@@ -91,7 +93,7 @@
             }
         }
 
-        onFullRepresentationItemChanged: {
+        function onFullRepresentationItemChanged(fullRepresentationItem) {
             preloadFullRepresentationItem(fullRepresentationItem)
         }
     }
diff --git a/applets/systemtray/package/contents/ui/main.qml b/applets/systemtray/package/contents/ui/main.qml
--- a/applets/systemtray/package/contents/ui/main.qml
+++ b/applets/systemtray/package/contents/ui/main.qml
@@ -78,17 +78,19 @@
 
     Connections {
         target: plasmoid
-        onUserConfiguringChanged: {
-            if (plasmoid.userConfiguring) {
+        function onUserConfiguringChanged(userConfiguring) {
+            if (userConfiguring) {
                 dialog.visible = false
             }
         }
     }
 
     Connections {
         target: plasmoid.configuration
 
-        onExtraItemsChanged: plasmoid.nativeInterface.allowedPlasmoids = plasmoid.configuration.extraItems
+        function onExtraItemsChanged(extraItems) {
+            plasmoid.nativeInterface.allowedPlasmoids = extraItems
+        }
     }
 
     CurrentItemHighLight {