--- a/QTfrontend/ui/widget/mapContainer.cpp	Sat Jun 15 19:49:02 2019 +0200
+++ b/QTfrontend/ui/widget/mapContainer.cpp	Sun Jun 16 00:49:58 2019 +0200
@@ -297,6 +297,7 @@
     mapFeatureSize->setMaximum(25);
     mapFeatureSize->setMinimum(1);
     //mapFeatureSize->setFixedWidth(259);
+    mapFeatureSize->setPageStep(5);
     mapFeatureSize->setValue(m_mapFeatureSize);
     mapFeatureSize->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
     bottomLeftLayout->addWidget(mapFeatureSize, 0);