diff --git a/src/qcam/main_window.cpp b/src/qcam/main_window.cpp
index d021fa9..c95d097 100644
--- a/src/qcam/main_window.cpp
+++ b/src/qcam/main_window.cpp
@@ -114,14 +114,14 @@ int MainWindow::createToolbars()
 	connect(action, &QAction::triggered, this, &MainWindow::quit);
 
 	/* Camera selector. */
-	QComboBox *cameraCombo = new QComboBox();
-	connect(cameraCombo, QOverload<int>::of(&QComboBox::activated),
+	cameraCombo_ = new QComboBox();
+	connect(cameraCombo_, QOverload<int>::of(&QComboBox::activated),
 		this, &MainWindow::switchCamera);
 
 	for (const std::shared_ptr<Camera> &cam : cm_->cameras())
-		cameraCombo->addItem(QString::fromStdString(cam->name()));
+		cameraCombo_->addItem(QString::fromStdString(cam->name()));
 
-	toolbar_->addWidget(cameraCombo);
+	toolbar_->addWidget(cameraCombo_);
 
 	toolbar_->addSeparator();
 
diff --git a/src/qcam/main_window.h b/src/qcam/main_window.h
index 5d6251c..4ec37d4 100644
--- a/src/qcam/main_window.h
+++ b/src/qcam/main_window.h
@@ -29,6 +29,7 @@
 using namespace libcamera;
 
 class QAction;
+class QComboBox;
 
 enum {
 	OptCamera = 'c',
@@ -72,6 +73,7 @@ private:
 	/* UI elements */
 	QToolBar *toolbar_;
 	QAction *startStopAction_;
+	QComboBox *cameraCombo_;
 	ViewFinder *viewfinder_;
 
 	QIcon iconPlay_;