diff --git a/include/gz/gui/qml/Main.qml b/include/gz/gui/qml/Main.qml
index 132bac2bf..eb5ece04e 100644
--- a/include/gz/gui/qml/Main.qml
+++ b/include/gz/gui/qml/Main.qml
@@ -101,11 +101,11 @@ ApplicationWindow
   // C++ signals to QML slots
   Connections {
     target: MainWindow
-    onNotify: {
+    function onNotify(_message) {
       notificationDialog.setTextDuration(_message, 0)
     }
-    onNotifyWithDuration: {
-      notificationDialog.setTextDuration(_message, _duration)
+    function onNotifyWithDuration(_message_, _duration) {
+      notificationDialog.setTextDuration(_message, _duration);
     }
   }
 
diff --git a/include/gz/gui/qml/PluginMenu.qml b/include/gz/gui/qml/PluginMenu.qml
index 53d1f0d37..890a7e7d4 100644
--- a/include/gz/gui/qml/PluginMenu.qml
+++ b/include/gz/gui/qml/PluginMenu.qml
@@ -26,7 +26,7 @@ Popup {
 
   Connections {
     target: MainWindow
-    onConfigChanged: {
+    function onConfigChanged() {
       filteredModel.model = MainWindow.PluginListModel()
     }
   }
diff --git a/include/gz/gui/qml/StyleDialog.qml b/include/gz/gui/qml/StyleDialog.qml
index 7845f2ed2..c5f841c5c 100644
--- a/include/gz/gui/qml/StyleDialog.qml
+++ b/include/gz/gui/qml/StyleDialog.qml
@@ -97,21 +97,21 @@ Dialog {
   // Connections (C++ signal to QML slot)
   Connections {
     target: MainWindow
-    onMaterialThemeChanged: {
+    function onMaterialThemeChanged() {
       updateTheme(MainWindow.materialTheme);
     }
   }
 
   Connections {
     target: MainWindow
-    onMaterialPrimaryChanged: {
+    function onMaterialPrimaryChanged() {
       updatePrimary(MainWindow.materialPrimary);
     }
   }
 
   Connections {
     target: MainWindow
-    onMaterialAccentChanged: {
+    function onMaterialAccentChanged () {
       updateAccent(MainWindow.materialAccent);
     }
   }
diff --git a/src/plugins/grid_config/GridConfig.qml b/src/plugins/grid_config/GridConfig.qml
index 649b1d80e..788e177e5 100644
--- a/src/plugins/grid_config/GridConfig.qml
+++ b/src/plugins/grid_config/GridConfig.qml
@@ -42,7 +42,7 @@ GridLayout {
 
   Connections {
     target: GridConfig
-    onNewParams: {
+    onNewParams(_hCellCount, _vCellCount, _cellLength, _pos, _rot, _color) {
       horizontalCellCount.value = _hCellCount;
       verticalCellCount.value = _vCellCount;
       cellLength.value = _cellLength;
diff --git a/src/plugins/image_display/ImageDisplay.qml b/src/plugins/image_display/ImageDisplay.qml
index fa78102e1..6fc7f3c9f 100644
--- a/src/plugins/image_display/ImageDisplay.qml
+++ b/src/plugins/image_display/ImageDisplay.qml
@@ -49,7 +49,9 @@ Rectangle {
 
   Connections {
     target: ImageDisplay
-    onNewImage: image.reload();
+    function onNewImage() {
+      image.reload();
+    }
   }
 
   ColumnLayout {
diff --git a/src/plugins/world_control/WorldControl.qml b/src/plugins/world_control/WorldControl.qml
index b66864064..6b7b19140 100644
--- a/src/plugins/world_control/WorldControl.qml
+++ b/src/plugins/world_control/WorldControl.qml
@@ -29,10 +29,10 @@ RowLayout {
 
   Connections {
     target: WorldControl
-    onPlaying: {
+    function onPlaying() {
       paused = false;
     }
-    onPaused: {
+    function onPaused() {
       paused = true;
     }
   }