diff --git a/qtaskbarcontrol.cpp b/qtaskbarcontrol.cpp
index 27adb0d..93177b5 100644
--- a/qtaskbarcontrol.cpp
+++ b/qtaskbarcontrol.cpp
@@ -127,7 +127,7 @@ void QTaskbarControl::setCounter(int value)
 bool QTaskbarControl::eventFilter(QObject *watched, QEvent *event)
 {
 	if (event->type() == QEvent::Show) {
-		auto widget = qobject_cast<QWidget*>(watched);
+		auto *widget = qobject_cast<QWidget*>(watched);
 		if (widget)
 			setWindow(widget->windowHandle());
 	}
diff --git a/qtaskbarcontrol.h b/qtaskbarcontrol.h
index 7ea39f9..396d641 100644
--- a/qtaskbarcontrol.h
+++ b/qtaskbarcontrol.h
@@ -38,7 +38,7 @@ class Q_TASKBAR_CONTROL_EXPORT QTaskbarControl : public QObject
 	int counter() const;
 
 public slots:
-	void setWindowsProgressState(WinProgressState state);
+	void setWindowsProgressState(QTaskbarControl::WinProgressState state);
 	void setWindowsBadgeIcon(const QIcon &icon);
 	void setWindowsBadgeTextColor(const QColor &color);
 	void setProgressVisible(bool visible);
diff --git a/qtaskbarcontrol_x11.h b/qtaskbarcontrol_x11.h
index 8eba213..50047cc 100644
--- a/qtaskbarcontrol_x11.h
+++ b/qtaskbarcontrol_x11.h
@@ -11,7 +11,7 @@ class QX11TaskbarControl : public QTaskbarControlPrivate
 	void setCounter(bool visible, int value) override;
 
 private:
-	void sendMessage(const QVariantMap &params);
+	static void sendMessage(const QVariantMap &params);
 };
 
 #endif // QTASKBARCONTROL_X11_H