diff --git a/mattermost.el b/mattermost.el
index 0b82433..a55cfd4 100644
--- a/mattermost.el
+++ b/mattermost.el
@@ -56,7 +56,8 @@
     (insert (format "[%s] %s\n" username msg))))
 
 (defun mattermost--get-user (user-id)
-  "Returns the user from the internal cache or fetches it first"
+  "Returns the user from the internal cache and fills the cache
+if the user is not present"
   (let* ((user-id-keyword (mattermost-string->keyword user-id))
          (user (plist-get mattermost-users-plist user-id-keyword)))
     (if (not user)