diff --git a/src/gui/tray/ActivityList.qml b/src/gui/tray/ActivityList.qml
index 1a9e110776..e2e43c3492 100644
--- a/src/gui/tray/ActivityList.qml
+++ b/src/gui/tray/ActivityList.qml
@@ -38,8 +38,8 @@ ScrollView {
 
     ScrollBar.horizontal.policy: ScrollBar.AlwaysOff
     ScrollBar.vertical.policy: ScrollBar.AlwaysOn
-    ScrollBar.vertical.width: Math.max(ScrollBar.vertical.implicitWidth, controlRoot.width * 0.03)
-    ScrollBar.vertical.minimumSize: 0.05
+    ScrollBar.vertical.width: Math.max(ScrollBar.vertical.implicitWidth, Style.minimumScrollBarWidth)
+    ScrollBar.vertical.minimumSize: Style.minimumScrollBarThumbSize
 
     data: NC.WheelHandler {
         target: controlRoot.contentItem
diff --git a/theme/Style/Style.qml b/theme/Style/Style.qml
index e8597e13e0..98856f8c8e 100644
--- a/theme/Style/Style.qml
+++ b/theme/Style/Style.qml
@@ -70,6 +70,8 @@ QtObject {
 
     property int minActivityHeight: variableSize(32)
 
+    property int minimumScrollBarWidth: 12
+    property real minimumScrollBarThumbSize: 0
     property int currentAccountButtonWidth: 220
     property int currentAccountButtonRadius: 2
     property int currentAccountLabelWidth: 128