diff --git a/lookandfeel/contents/systemdialog/SystemDialog.qml b/lookandfeel/contents/systemdialog/SystemDialog.qml
index b121436db..839cfcf62 100644
--- a/lookandfeel/contents/systemdialog/SystemDialog.qml
+++ b/lookandfeel/contents/systemdialog/SystemDialog.qml
@@ -29,7 +29,7 @@ Item {
     implicitHeight: column.implicitHeight
     implicitWidth: column.implicitWidth
     readonly property real minimumHeight: column.Layout.minimumHeight + mainItem.implicitHeight + footerButtonBox.implicitHeight
-    readonly property real minimumWidth: column.Layout.minimumWidth + mainItem.implicitWidth + footerButtonBox.implicitWidth
+    readonly property real minimumWidth: Math.min(Math.round(Screen.width / 3), column.Layout.minimumWidth + mainItem.implicitWidth + footerButtonBox.implicitWidth)
     readonly property int flags: Qt.Dialog
     property alias standardButtons: footerButtonBox.standardButtons
     readonly property int spacing: Kirigami.Units.largeSpacing // standard KDE dialog margins