diff --git a/src/libs/tracing/qml/FlameGraphView.qml b/src/libs/tracing/qml/FlameGraphView.qml
index 4752ae81d51..e91c73561ca 100644
--- a/src/libs/tracing/qml/FlameGraphView.qml
+++ b/src/libs/tracing/qml/FlameGraphView.qml
@@ -150,7 +150,7 @@ ScrollView {
             maximumDepth: 128
             y: flickable.height > height ? flickable.height - height : 0
 
-            onSelectedTypeIdChanged: {
+            onSelectedTypeIdChanged: (selectedTypeId) => {
                 if (selectedTypeId !== root.selectedTypeId) {
                     // Change originates from inside. Send typeSelected().
                     root.selectedTypeId = selectedTypeId;
diff --git a/src/libs/tracing/qml/MainView.qml b/src/libs/tracing/qml/MainView.qml
index 17a6a29e3c0..5de435ef12d 100644
--- a/src/libs/tracing/qml/MainView.qml
+++ b/src/libs/tracing/qml/MainView.qml
@@ -134,7 +134,9 @@ Rectangle {
 
     focus: true
     property bool shiftPressed: false;
-    Keys.onPressed: shiftPressed = (event.key === Qt.Key_Shift);
+    Keys.onPressed: (event) => {
+        shiftPressed = (event.key === Qt.Key_Shift);
+    }
     Keys.onReleased: shiftPressed = false;
 
     TimelineLabels {
@@ -385,7 +387,7 @@ Rectangle {
             content.propagateSelection(-1, -1);
         }
 
-        onUpdateNote: {
+        onUpdateNote: (text) => {
             if (timelineModelAggregator.notes && selectedModel != -1 && selectedItem != -1) {
                 timelineModelAggregator.notes.setText(
                             timelineModelAggregator.models[selectedModel].modelId,
diff --git a/src/libs/tracing/qml/TimelineLabels.qml b/src/libs/tracing/qml/TimelineLabels.qml
index 88fadfa6342..8dfd6dc7e95 100644
--- a/src/libs/tracing/qml/TimelineLabels.qml
+++ b/src/libs/tracing/qml/TimelineLabels.qml
@@ -106,12 +106,12 @@ Flickable {
                         height: parent.height
                         dragOffset: loader.y
 
-                        onDropped: {
+                        onDropped: (sourceIndex, targetIndex) => {
                             categories.moveCategories(sourceIndex, targetIndex);
                             labelsModel.items.move(sourceIndex, targetIndex);
                         }
 
-                        onSelectById: {
+                        onSelectById: (eventId) => {
                             categories.selectItem(index, eventId)
                         }