diff --git a/100-level-AsyncAPI-Intro/step3.md b/100-level-AsyncAPI-Intro/step3.md
index 4b4ead5..c0e5a11 100644
--- a/100-level-AsyncAPI-Intro/step3.md
+++ b/100-level-AsyncAPI-Intro/step3.md
@@ -51,7 +51,7 @@ operations:
   spaceMessage:
     action: send
     channel: 
-      $ref: '#/channels/lettertoEarth'
+      $ref: '#/channels/spaceMessage'
 ```
 
 This part tells his spaceship to send the message using the `spaceMessage` channel.