diff --git a/support/doc/plugins/guide.md b/support/doc/plugins/guide.md
index 8f2ddcbbc..193ddea8e 100644
--- a/support/doc/plugins/guide.md
+++ b/support/doc/plugins/guide.md
@@ -653,7 +653,7 @@ function register (...) {
 
 **PeerTube >= 3.2**
 
-To make your own HTTP requests using the current authenticated user, use an helper to automatically set appropriate headers:
+To make your own HTTP requests using the current authenticated user, use a helper to automatically set appropriate headers:
 
 ```js
 function register (...) {