diff --git a/src/libs/tracing/qml/CategoryLabel.qml b/src/libs/tracing/qml/CategoryLabel.qml
index 171c92400e4..c47e843f239 100644
--- a/src/libs/tracing/qml/CategoryLabel.qml
+++ b/src/libs/tracing/qml/CategoryLabel.qml
@@ -148,7 +148,7 @@ Item {
         property int currentNote: -1
         Connections {
             target: notesModel
-            onChanged: {
+            function onChanged(typeId, modelId, timelineIndex) {
                 // This will only be called if notesModel != null.
                 if (modelId === -1 || modelId === model.modelId) {
                     var notes = notesModel.byTimelineModel(model.modelId);
diff --git a/src/libs/tracing/qml/FlameGraphView.qml b/src/libs/tracing/qml/FlameGraphView.qml
index f98bcb3134a..a27f3da8d6c 100644
--- a/src/libs/tracing/qml/FlameGraphView.qml
+++ b/src/libs/tracing/qml/FlameGraphView.qml
@@ -307,7 +307,7 @@ ScrollView {
 
             Connections {
                 target: root.model
-                onModelReset: {
+                function onModelReset() {
                     tooltip.hoveredNode = null;
                     tooltip.selectedNode = null;
                 }
diff --git a/src/libs/tracing/qml/MainView.qml b/src/libs/tracing/qml/MainView.qml
index f544721f9a8..4e28ea9b26c 100644
--- a/src/libs/tracing/qml/MainView.qml
+++ b/src/libs/tracing/qml/MainView.qml
@@ -51,12 +51,12 @@ Rectangle {
     // ***** connections with external objects
     Connections {
         target: zoomControl
-        onRangeChanged: {
+        function onRangeChanged() {
             zoomSliderToolBar.updateZoomLevel();
             content.scroll();
             selectionRange.update();
         }
-        onWindowChanged: {
+        function onWindowChanged() {
             content.scroll();
         }
     }
diff --git a/src/libs/tracing/qml/Overview.qml b/src/libs/tracing/qml/Overview.qml
index e5602858028..f24bd03dae4 100644
--- a/src/libs/tracing/qml/Overview.qml
+++ b/src/libs/tracing/qml/Overview.qml
@@ -70,7 +70,7 @@ Rectangle {
 
     Connections {
         target: zoomer
-        onRangeChanged: updateRangeMover()
+        function onRangeChanged() { updateRangeMover(); }
     }
 
     TimeDisplay {
diff --git a/src/libs/tracing/qml/SelectionRange.qml b/src/libs/tracing/qml/SelectionRange.qml
index 9f111b75c4c..3f10ac3414f 100644
--- a/src/libs/tracing/qml/SelectionRange.qml
+++ b/src/libs/tracing/qml/SelectionRange.qml
@@ -68,7 +68,7 @@ RangeMover {
 
     Connections {
         target: zoomer
-        onWindowChanged: updateRange()
+        function onWindowChanged() { updateRange(); }
     }
 
     function setPos(pos) {
diff --git a/src/libs/tracing/qml/SelectionRangeDetails.qml b/src/libs/tracing/qml/SelectionRangeDetails.qml
index 288ac7693cc..e5b9c411067 100644
--- a/src/libs/tracing/qml/SelectionRangeDetails.qml
+++ b/src/libs/tracing/qml/SelectionRangeDetails.qml
@@ -48,8 +48,8 @@ Item {
     // keep inside view
     Connections {
         target: selectionRangeDetails.parent
-        onWidthChanged: fitInView();
-        onHeightChanged: fitInView();
+        function onWidthChanged() { fitInView(); }
+        function onHeightChanged() { fitInView(); }
     }
 
     function fitInView() {
diff --git a/src/libs/tracing/qml/TimeMarks.qml b/src/libs/tracing/qml/TimeMarks.qml
index a3622b06d25..31c3d49633a 100644
--- a/src/libs/tracing/qml/TimeMarks.qml
+++ b/src/libs/tracing/qml/TimeMarks.qml
@@ -70,7 +70,7 @@ Item {
 
     Connections {
         target: model
-        onExpandedRowHeightChanged: {
+        function onExpandedRowHeightChanged() {
             if (model && model.expanded && row >= 0)
                 rowRepeater.itemAt(row).height = height;
         }
diff --git a/src/libs/tracing/qml/TimelineContent.qml b/src/libs/tracing/qml/TimelineContent.qml
index 5eb667822fe..188ee28136a 100644
--- a/src/libs/tracing/qml/TimelineContent.qml
+++ b/src/libs/tracing/qml/TimelineContent.qml
@@ -135,8 +135,8 @@ Flickable {
 
                 Connections {
                     target: timelineView
-                    onClearChildren: renderer.clearData()
-                    onSelect: {
+                    function onClearChildren() { renderer.clearData(); }
+                    function onSelect(modelIndex, eventIndex) {
                         if (modelIndex === index || modelIndex === -1) {
                             renderer.selectedItem = eventIndex;
                             if (eventIndex !== -1)
@@ -167,7 +167,7 @@ Flickable {
 
                 Connections {
                     target: model
-                    onDetailsChanged: {
+                    function onDetailsChanged() {
                         if (selectedItem != -1) {
                             flick.propagateSelection(-1, -1);
                             flick.propagateSelection(index, selectedItem);