diff --git a/src/iotMapManager/src/iot-map-marker.ts b/src/iotMapManager/src/iot-map-marker.ts
index 9b289b5..aff0125 100644
--- a/src/iotMapManager/src/iot-map-marker.ts
+++ b/src/iotMapManager/src/iot-map-marker.ts
@@ -48,7 +48,7 @@ export class IotMapMarker extends IotMapDisplay {
   public select (selected: boolean): void {
     this.selected = selected
     this.setIcon(getMarkerIcon(this.data, this.config, selected))
-    this.setZIndexOffset((selected) ? 100 : 0)
+    this.setZIndexOffset((selected) ? 1000000 : 0)
   }
 
   public getData (): IotMarker {