diff --git a/applet/contents/ui/ListItemBase.qml b/applet/contents/ui/ListItemBase.qml
--- a/applet/contents/ui/ListItemBase.qml
+++ b/applet/contents/ui/ListItemBase.qml
@@ -53,15 +53,18 @@
         height: column.height
 
         RowLayout {
-            id: rowLayout
+            id: controlsRow
+            spacing: units.smallSpacing
             anchors.left: parent.left
             anchors.right: parent.right
 
             PlasmaCore.IconItem {
                 id: clientIcon
                 Layout.alignment: Qt.AlignHCenter | Qt.AlignVCenter
-                Layout.preferredHeight: column.height * 0.75
-                Layout.preferredWidth: Layout.preferredHeight
+                Layout.minimumHeight: column.height * 0.75
+                Layout.minimumWidth: Layout.minimumHeight
+                Layout.maximumHeight: Layout.minimumHeight
+                Layout.maximumWidth: Layout.minimumWidth
                 source: "unknown"
                 visible: type === "sink-input" || type === "source-input"
 
@@ -105,13 +108,17 @@
 
             ColumnLayout {
                 id: column
-                spacing: 0
+                Layout.minimumHeight: contextMenuButton.implicitHeight * 2 + units.smallSpacing
+                Layout.maximumHeight: Layout.minimumHeight
 
                 RowLayout {
-                    Layout.minimumHeight: contextMenuButton.height
+                    spacing: 0
+                    Layout.minimumHeight: contextMenuButton.implicitHeight
 
                     PlasmaComponents3.RadioButton {
                         id: defaultButton
+                        Layout.maximumWidth: controlsRow.width - (clientIcon.visible ? clientIcon.width + units.smallSpacing : 0)
+                                              - (contextMenuButton.visible ? contextMenuButton.implicitWidth + units.smallSpacing : 0)
                         Layout.leftMargin: LayoutMirroring.enabled ? 0 : Math.round((muteButton.width - defaultButton.indicator.width) / 2)
                         Layout.rightMargin: LayoutMirroring.enabled ? Math.round((muteButton.width - defaultButton.indicator.width) / 2) : 0
                         spacing: units.smallSpacing + Math.round((muteButton.width - defaultButton.indicator.width) / 2)
@@ -122,6 +129,7 @@
 
                     Label {
                         id: soloLabel
+                        Layout.maximumWidth: defaultButton.Layout.maximumWidth
                         text: defaultButton.text
                         visible: !defaultButton.visible
                         elide: Text.ElideRight