diff --git a/concourse.md b/concourse.md
index 09a6164bf..42988da99 100644
--- a/concourse.md
+++ b/concourse.md
@@ -22,7 +22,7 @@ Scale instance types, disks and instance count based on your needs. Other sizes
 
 1. Start with the sample manifest from the [Concourse documentation](http://concourse.ci/clusters-with-bosh.html)
 2. Replace all ```vm_type: REPLACE_ME``` with ```vm_type: n1-standard-1```.
-3. Add the vm_extension ```lbs``` to the instance_group "web"
+3. Add the vm_extension ```lb``` to the instance_group "web"
 4. Add the property ```tls_bind_port: 443``` to the instance_group "web"
 5. Add the vm_extension ```50GB_ephemeral_disk``` to the instance_group "worker"
 6. Replace all ```persistent_disk_type: REPLACE_ME``` with ```persistent_disk_type: 5GB```