diff --git a/demo/MainWindow.cpp b/demo/MainWindow.cpp
index 4404053..466bcc1 100644
--- a/demo/MainWindow.cpp
+++ b/demo/MainWindow.cpp
@@ -60,18 +60,20 @@
 #include <QToolButton>
 #include <QToolBar>
 #include <QPointer>
-#include <QRandomGenerator>
+#include <QMap>
+#include <QElapsedTimer>
 
 
+#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+#include <QRandomGenerator>
+#endif
+
 #ifdef Q_OS_WIN
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 #include <QAxWidget>
 #endif
 #endif
 
-#include <QMap>
-#include <QElapsedTimer>
-
 #include "DockManager.h"
 #include "DockWidget.h"
 #include "DockAreaWidget.h"
@@ -84,6 +86,21 @@
 #include "ImageViewer.h"
 
 
+
+/**
+ * Returns a random number from 0 to highest - 1
+ */
+int randomNumberBounded(int highest)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+	return QRandomGenerator::global()->bounded(highest);
+#else
+	qsrand(QTime::currentTime().msec());
+	return qrand() % highest;
+#endif
+}
+
+
 /**
  * Function returns a features string with closable (c), movable (m) and floatable (f)
  * features. i.e. The following string is for a not closable but movable and floatable
@@ -328,7 +345,7 @@ struct MainWindowPrivate
 	{
 		static int ImageViewerCount = 0;
 		auto w = new CImageViewer();
-		auto ImageIndex = QRandomGenerator::global()->bounded(4);
+		auto ImageIndex = randomNumberBounded(4);
 		auto FileName = ":adsdemo/images/ads_logo.svg";
 
 		// Pick a random image from a number of images