diff --git a/src/microhttpd/digestauth.c b/src/microhttpd/digestauth.c
index fe078009..f29242f5 100644
--- a/src/microhttpd/digestauth.c
+++ b/src/microhttpd/digestauth.c
@@ -1414,6 +1414,10 @@ MHD_queue_auth_fail_response2 (struct MHD_Connection *connection,
                                        header);
       else
         ret = MHD_NO;
+      if (MHD_YES == ret)
+        ret = MHD_add_response_header (response,
+                                       MHD_HTTP_HEADER_CONNECTION,
+                                       "close");
       free (header);
     }
     else