diff --git a/docs/source/tutorial/schema.md b/docs/source/tutorial/schema.md
index 8b8872c..bd4d890 100644
--- a/docs/source/tutorial/schema.md
+++ b/docs/source/tutorial/schema.md
@@ -135,7 +135,7 @@ _src/schema.js_
 
 ```graphql
 type Mutation {
-  # if false, signup failed -- check errors
+  # if false, booking trips failed -- check errors
   bookTrips(launchIds: [ID]!): TripUpdateResponse!
 
   # if false, cancellation failed -- check errors