diff --git a/kde/gui/SessionTree.qml b/kde/gui/SessionTree.qml
index 54ca096..6244574 100644
--- a/kde/gui/SessionTree.qml
+++ b/kde/gui/SessionTree.qml
@@ -295,12 +295,12 @@ Item {
                         // Agent state indicator (agent rows only)
                         Rectangle {
                             id: stateIndicator
-                            Layout.preferredWidth: 8
-                            Layout.preferredHeight: 8
+                            Layout.preferredWidth: height
+                            Layout.preferredHeight: parent.height * 0.3
                             Layout.alignment: Qt.AlignVCenter
-                            Layout.leftMargin: 4
-                            Layout.rightMargin: 6
-                            radius: 4
+                            Layout.leftMargin: parent.height * 0.15
+                            Layout.rightMargin: parent.height * 0.25
+                            radius: height / 2
                             visible: type === "agent"
                             color: {
                                 var state = ollie.agentState(parentId || "", agentId || "")