diff --git a/app/push_service.py b/app/push_service.py
index 466e026..24416c2 100644
--- a/app/push_service.py
+++ b/app/push_service.py
@@ -75,7 +75,7 @@ class PushService:
                 
         return results
 
-    def create_notification_payload(self, title: str, body: str, icon: str = None) -> Dict[str, Any]:
+    def create_notification_payload(self, title: str, body: str) -> Dict[str, Any]:
         """
         Crée un payload de notification standardisé.
         
@@ -90,15 +90,16 @@ class PushService:
         payload = {
             "notification": {
                 "title": title,
-                "body": body
+                "body": body,
+                "icon": "assets/icon-128x128.png",
+                "image": "assets/icon-128x128.png",
+                "data": {
+                    "onActionClick": {
+                        "default": {"operation": "openWindow", "url": "/map"}
+                    }
+                }
             },
-            "data": {
-                "url": "/map"
-            }
         }
-        
-        if icon:
-            payload["notification"]["icon"] = icon
             
         return payload