diff --git a/communication.md b/communication.md
index 1cda0f0cd143caae16c39e9dbbb1310256d6e5a8..311b710a652610c6c4967c992fbc597b3a66c884 100644
--- a/communication.md
+++ b/communication.md
@@ -11,9 +11,9 @@ For a system with only ROS2 agents we can choose one of the
 following way to communicate between agents:
 
 - Use ROS2. We need to make sure the DDS layer is configured correctly
-in this case. All agents will have the same value for ROS_DOMAN_ID.
+in this case. All agents will have the same value for ROS_DOMAIN_ID.
 - Use json coding of messages and send the encoded message between agents using an MQTT
-  broker. All agents will have different value for ROS_DOMAN_ID.
+  broker. All agents will have different value for ROS_DOMAIN_ID.
 
 
 ## Issues