diff --git a/tests/auto/tracing/timelinezoomcontrol/tst_timelinezoomcontrol.cpp b/tests/auto/tracing/timelinezoomcontrol/tst_timelinezoomcontrol.cpp
index 3e1c936c0d5..ea26071401d 100644
--- a/tests/auto/tracing/timelinezoomcontrol/tst_timelinezoomcontrol.cpp
+++ b/tests/auto/tracing/timelinezoomcontrol/tst_timelinezoomcontrol.cpp
@@ -55,15 +55,14 @@ void tst_TimelineZoomControl::window()
 
     QTimer timer;
     timer.setSingleShot(true);
-    connect(&timer, &QTimer::timeout, [&] {
+    connect(&timer, &QTimer::timeout, this, [&zoomControl] {
         QVERIFY(zoomControl.windowLocked());
         zoomControl.setWindowLocked(false);
     });
 
     int numWindowChanges = 0;
 
-    connect(&zoomControl, &TimelineZoomControl::windowChanged,
-            [&](qint64, qint64) {
+    connect(&zoomControl, &TimelineZoomControl::windowChanged, this, [&](qint64, qint64) {
         verifyWindow(zoomControl);
 
         QVERIFY(!timer.isActive());
@@ -100,7 +99,7 @@ void tst_TimelineZoomControl::window()
     zoomControl.setRange(152000, 152005); // move right
 
     QMetaObject::Connection connection = connect(
-                &zoomControl, &TimelineZoomControl::windowMovingChanged, [&](bool moving) {
+                &zoomControl, &TimelineZoomControl::windowMovingChanged, this, [&](bool moving) {
         if (moving)
             return;
 
diff --git a/tests/manual/widgets/common/themeselector.cpp b/tests/manual/widgets/common/themeselector.cpp
index 2fbdd2424b8..8d3b3bf2db1 100644
--- a/tests/manual/widgets/common/themeselector.cpp
+++ b/tests/manual/widgets/common/themeselector.cpp
@@ -45,7 +45,7 @@ ThemeSelector::ThemeSelector(QWidget *parent)
     setCurrentText(appSettings.value(themeNameKey, "Flat Dark").toString());
     setTheme(currentData().toString());
 
-    connect(this, &QComboBox::currentTextChanged, [this]{
+    connect(this, &QComboBox::currentTextChanged, this, [this] {
         setTheme(currentData().toString());
         QSettings appSettings;
         appSettings.setValue(themeNameKey, currentText());
diff --git a/tests/manual/widgets/infolabel/tst_manual_widgets_infolabel.cpp b/tests/manual/widgets/infolabel/tst_manual_widgets_infolabel.cpp
index 288c1fb4a97..3943176a93c 100644
--- a/tests/manual/widgets/infolabel/tst_manual_widgets_infolabel.cpp
+++ b/tests/manual/widgets/infolabel/tst_manual_widgets_infolabel.cpp
@@ -58,7 +58,7 @@ int main(int argc, char *argv[])
 
     auto withLink = new Utils::InfoLabel("With <a href=\"link clicked!\">link</a>", InfoLabel::Error);
     withLink->setElideMode(Qt::ElideNone);
-    QObject::connect(withLink, &QLabel::linkActivated, [widget](const QString& link){
+    QObject::connect(withLink, &QLabel::linkActivated, &app, [widget](const QString& link) {
         QMessageBox::information(widget, {}, link);
     });
     mainLayout->addWidget(withLink);