diff --git a/USAGE.md b/USAGE.md
index dca5cd60a..8aa104fe5 100644
--- a/USAGE.md
+++ b/USAGE.md
@@ -389,7 +389,7 @@ print response.headers
 ```
 ## Retrieve an existing API Key
 
-**This endpoint allows you to retrieve a single api key.**
+**This endpoint allows you to retrieve a single API key.**
 
 If the API Key ID does not exist an HTTP 404 will be returned.