diff --git a/examples/widgets/widgets/mousebuttons/buttontester.cpp b/examples/widgets/widgets/mousebuttons/buttontester.cpp
index 41c6c95adf..51287f541b 100644
--- a/examples/widgets/widgets/mousebuttons/buttontester.cpp
+++ b/examples/widgets/widgets/mousebuttons/buttontester.cpp
@@ -41,6 +41,8 @@
 
 #include "buttontester.h"
 
+#include <QDebug>
+
 void ButtonTester::mousePressEvent(QMouseEvent *e)
 {
     int j = ButtonTester::buttonByNumber (e->button());
diff --git a/examples/widgets/widgets/mousebuttons/buttontester.h b/examples/widgets/widgets/mousebuttons/buttontester.h
index 9e7011ac9a..41ae8d0582 100644
--- a/examples/widgets/widgets/mousebuttons/buttontester.h
+++ b/examples/widgets/widgets/mousebuttons/buttontester.h
@@ -41,10 +41,8 @@
 #ifndef BUTTONTESTER_H
 #define BUTTONTESTER_H
 
-#include <QtWidgets>
 #include <QTextEdit>
 #include <QString>
-#include <QDebug>
 #include <QMouseEvent>
 #include <QWheelEvent>
 
diff --git a/examples/widgets/widgets/mousebuttons/main.cpp b/examples/widgets/widgets/mousebuttons/main.cpp
index 184547113e..b5446df9e9 100644
--- a/examples/widgets/widgets/mousebuttons/main.cpp
+++ b/examples/widgets/widgets/mousebuttons/main.cpp
@@ -40,7 +40,10 @@
 ****************************************************************************/
 
 #include "buttontester.h"
-#include <QtGui>
+
+#include <QApplication>
+#include <QPushButton>
+#include <QVBoxLayout>
 
 int main(int argv, char **args)
 {