diff --git a/CHANGELOG.md b/CHANGELOG.md
index 76e0c6846..d152ba466 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ Features:
 Fixes:
 
 Misc:
+- [#1840](https://github.com/rails-api/active_model_serializers/pull/1840) Add note about key_transform casing needing to match for multi-word fields. (@NullVoxPopuli)
 
 ### [v0.10.2 (2016-07-05)](https://github.com/rails-api/active_model_serializers/compare/v0.10.1...v0.10.2)
 
diff --git a/docs/general/fields.md b/docs/general/fields.md
index a1a12be68..96677073d 100644
--- a/docs/general/fields.md
+++ b/docs/general/fields.md
@@ -29,3 +29,5 @@ render json: @user, fields: { users: [:access_token] }
 ```
 
 Where `users` is the JSONAPI type.
+
+Casing for multi-word fields should match the casing specified for `ActiveModelSerializers.config.key_transform`.