diff --git a/core/avatar/controller.php b/core/avatar/controller.php
index c7624b90b659b2ee5b1f4a190dc2396681061e71..37ddef412ea9c75f93570764719be9c98e654967 100644
--- a/core/avatar/controller.php
+++ b/core/avatar/controller.php
@@ -32,6 +32,7 @@ class Controller {
 			\OC_Response::setETagHeader(crc32($image->data()));
 			$image->show();
 		} else {
+			// Signalizes $.avatar() to display a defaultavatar
 			\OC_JSON::success();
 		}
 	}