diff --git a/IoT/SensorNode2Server.adoc b/IoT/SensorNode2Server.adoc
index fc4f4bd..b56d5a5 100644
--- a/IoT/SensorNode2Server.adoc
+++ b/IoT/SensorNode2Server.adoc
@@ -424,7 +424,7 @@ image:./Swarming2.png[alt="Swarm"]
 
 
 .Architecture of swarm communication
-image:./Swarming2.gif[alt="Swarm Gateway"]
+image:./swarmlabn-1.png[alt="Swarm Gateway"]
 
 - Red Note: Sensor Node and Gateway Role
 - Black and Red Note:  Sensor Node - Client