diff --git a/CONFIGURATION.md b/CONFIGURATION.md
index ead5cd934..95eb2cab5 100644
--- a/CONFIGURATION.md
+++ b/CONFIGURATION.md
@@ -6,8 +6,8 @@ In the `config/` directory, you will find the following relevant files:
 * `prod.exs`: default additional configuration for `MIX_ENV=prod`
 
 Additionally, you can overload options in the following files:
-* `dev.secret.exs`: additional custom configuration for `MIX_ENV=dev`
-* `prod.secret.exs`: additional custom configuration for `MIX_ENV=prod`
+* `dev.secret.exs`: custom additional configuration for `MIX_ENV=dev`
+* `prod.secret.exs`: custom additional configuration for `MIX_ENV=prod`
 
 ## Message Rewrite Filters (MRFs)