diff --git a/docs/creating_integration_manifest.md b/docs/creating_integration_manifest.md
index c5956c12..fad6064a 100644
--- a/docs/creating_integration_manifest.md
+++ b/docs/creating_integration_manifest.md
@@ -36,7 +36,7 @@ Or a minimal example that you can copy into your project:
 
 ## Domain
 
-The domain is a short name consisting of characters and underscores. This domain has to be unique and cannot be changed. Example of the domain for the mobile app integration: `mobile_app`.
+The domain is a short name consisting of characters and underscores. This domain has to be unique and cannot be changed. Example of the domain for the mobile app integration: `mobile_app`. The domain key has to match the directory this file is in.
 
 ## Name