diff --git a/lib/http.c b/lib/http.c
index 20dd29ca1c..cced2ef8e3 100644
--- a/lib/http.c
+++ b/lib/http.c
@@ -1159,8 +1159,6 @@ CURLcode Curl_http_input_auth(struct Curl_easy *data, bool proxy,
  * http_should_fail() determines whether an HTTP response has gotten us
  * into an error state or not.
  *
- * @param conn all information about the current connection
- *
  * @retval FALSE communications should continue
  *
  * @retval TRUE communications should not continue