diff --git a/README.md b/README.md
index b0b72d6..f0f8ef5 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ AKS support will likely require more work. Contributions are welcome.
 
 To authenticate through managed identities instead of a shared key, omit `storage_access_key` from your `storage.yml` file.
 
-It is recommended to add the identity `principal_id` to the config.
+It is recommended to add the identity's `principal_id` to the config.
 
 ActiveStorage config example: