diff --git a/tests/graphicssignalplotterbenchmark.cpp b/tests/graphicssignalplotterbenchmark.cpp
index 1b94ea2..d8281e1 100644
--- a/tests/graphicssignalplotterbenchmark.cpp
+++ b/tests/graphicssignalplotterbenchmark.cpp
@@ -1,56 +1,60 @@
 #include "graphicssignalplotterbenchmark.h"
 #include "signalplotter/kgraphicssignalplotter.h"
 
+#include <QRandomGenerator>
 #include <QtTestGui>
 #include <QGraphicsView>
 #include <QGraphicsScene>
 #include <limits>
 
 void BenchmarkGraphicsSignalPlotter::init()
 {
     scene = new QGraphicsScene;
     view = new QGraphicsView(scene);
     s = new KGraphicsSignalPlotter;
     scene->addItem(s);
 }
 void BenchmarkGraphicsSignalPlotter::cleanup()
 {
     delete view;
     delete scene;
 }
 
 void BenchmarkGraphicsSignalPlotter::addData()
 {
     s->addBeam(Qt::blue);
     s->addBeam(Qt::green);
     s->addBeam(Qt::red);
     s->addBeam(Qt::yellow);
     s->resize(1000,500);
     view->resize(1010,510);
     view->show();
     s->setMaxAxisTextWidth(5);
     QVERIFY(QTest::qWaitForWindowExposed(view));
 
+    auto *generator = QRandomGenerator::global();
+
     QBENCHMARK {
-        s->addSample(QList<qreal>() << qrand()%10 << qrand()%10 << qrand()%10 << qrand()%10);
+        s->addSample(QList<qreal>() << generator->bounded(10) << generator->bounded(10) << generator->bounded(10) << generator->bounded(10));
         qApp->processEvents();
     }
 
 }
 
 void BenchmarkGraphicsSignalPlotter::addDataWhenHidden()
 {
     s->addBeam(Qt::blue);
     s->addBeam(Qt::green);
     s->addBeam(Qt::red);
     s->addBeam(Qt::yellow);
+    auto *generator = QRandomGenerator::global();
 
     QBENCHMARK {
-        s->addSample(QList<qreal>() << qrand()%10 << qrand()%10 << qrand()%10 << qrand()%10);
+        s->addSample(QList<qreal>() << generator->bounded(10) << generator->bounded(10) << generator->bounded(10) << generator->bounded(10));
         qApp->processEvents();
     }
 
 }
 
 QTEST_MAIN(BenchmarkGraphicsSignalPlotter)
 
diff --git a/tests/signalplotterbenchmark.cpp b/tests/signalplotterbenchmark.cpp
index 597477b..3f6172d 100644
--- a/tests/signalplotterbenchmark.cpp
+++ b/tests/signalplotterbenchmark.cpp
@@ -1,67 +1,71 @@
 #include "signalplotterbenchmark.h"
 #include "signalplotter/ksignalplotter.h"
 
+#include <QRandomGenerator>
 #include <QtTestGui>
 #include <QtGui>
 #include <limits>
 
 void BenchmarkSignalPlotter::init()
 {
     s = new KSignalPlotter;
 }
 void BenchmarkSignalPlotter::cleanup()
 {
     delete s;
 }
 
 void BenchmarkSignalPlotter::addData()
 {
     s->addBeam(Qt::blue);
     s->addBeam(Qt::green);
     s->addBeam(Qt::red);
     s->addBeam(Qt::yellow);
     s->show();
     s->setMaxAxisTextWidth(5);
     s->resize(1000,500);
     QVERIFY(QTest::qWaitForWindowExposed(s));
 
+    auto *generator = QRandomGenerator::global();
     QBENCHMARK {
-        s->addSample(QList<qreal>() << qrand()%10 << qrand()%10 << qrand()%10 << qrand()%10);
+        s->addSample(QList<qreal>() << generator->bounded(10) << generator->bounded(10) << generator->bounded(10) << generator->bounded(10));
         qApp->processEvents();
     }
 
 }
 void BenchmarkSignalPlotter::stackedData()
 {
     s->addBeam(Qt::blue);
     s->addBeam(Qt::green);
     s->addBeam(Qt::red);
     s->addBeam(Qt::yellow);
     s->setStackGraph(true);
     s->show();
     s->setMaxAxisTextWidth(5);
     s->resize(1000,500);
     QVERIFY(QTest::qWaitForWindowExposed(s));
 
+    auto *generator = QRandomGenerator::global();
     QBENCHMARK {
-        s->addSample(QList<qreal>() << qrand()%10 << qrand()%10 << qrand()%10 << qrand()%10);
+        s->addSample(QList<qreal>() << generator->bounded(10) << generator->bounded(10) << generator->bounded(10) << generator->bounded(10));
         qApp->processEvents();
     }
 
 }
 void BenchmarkSignalPlotter::addDataWhenHidden()
 {
     s->addBeam(Qt::blue);
     s->addBeam(Qt::green);
     s->addBeam(Qt::red);
     s->addBeam(Qt::yellow);
 
+    auto *generator = QRandomGenerator::global();
     QBENCHMARK {
-        s->addSample(QList<qreal>() << qrand()%10 << qrand()%10 << qrand()%10 << qrand()%10);
+        s->addSample(QList<qreal>() << generator->bounded(10) << generator->bounded(10) << generator->bounded(10) << generator->bounded(10));
         qApp->processEvents();
     }
 
 }
 
 QTEST_MAIN(BenchmarkSignalPlotter)