diff --git a/src/libs/vtools/dialogs/tools/dialogdetail.cpp b/src/libs/vtools/dialogs/tools/dialogdetail.cpp
index 1049cc744..189c4ea7d 100644
--- a/src/libs/vtools/dialogs/tools/dialogdetail.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogdetail.cpp
@@ -1002,7 +1002,7 @@ void DialogDetail::EditFormula()
     DialogEditWrongFormula dlg(data, NULL_ID, this);
     dlg.SetFormula(pleFormula->toPlainText());
     dlg.setCheckZero(bCheckZero);
-    if (dlg.exec() == true)
+    if (dlg.exec() == QDialog::Accepted)
     {
         QString qsFormula = dlg.GetFormula();
         qsFormula.replace("\n", " ");
diff --git a/src/libs/vtools/tools/vtooldetail.cpp b/src/libs/vtools/tools/vtooldetail.cpp
index 81a2be130..f3579fcc8 100644
--- a/src/libs/vtools/tools/vtooldetail.cpp
+++ b/src/libs/vtools/tools/vtooldetail.cpp
@@ -420,9 +420,16 @@ void VToolDetail::paint(QPainter *painter, const QStyleOptionGraphicsItem *optio
 {
     if (scene()->views().count() > 0)
     {
-        QPoint pt0 = scene()->views().at(0)->mapFromScene(0, 0);
-        QPoint pt = scene()->views().at(0)->mapFromScene(0, 100);
-        qreal dScale = qSqrt(QPoint::dotProduct(pt - pt0, pt - pt0));
+        const QPoint pt0 = scene()->views().at(0)->mapFromScene(0, 0);
+        const QPoint pt = scene()->views().at(0)->mapFromScene(0, 100);
+
+        const QPoint p = pt - pt0;
+
+#if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
+        const qreal dScale = qSqrt(QPoint::dotProduct(p, p));
+#else
+        const qreal dScale = qSqrt(p.x() * p.x() + p.y() * p.y());
+#endif //QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
         grainLine->SetScale(100/dScale);
         //qDebug() << "SCALE" << dScale << 10/dScale;
     }