diff --git a/src/microhttpd/connection.c b/src/microhttpd/connection.c
index b25ee2a9..4db9fae6 100644
--- a/src/microhttpd/connection.c
+++ b/src/microhttpd/connection.c
@@ -4912,7 +4912,7 @@ parse_connection_headers (struct MHD_Connection *connection)
         size_t num_digits;
 
         if (found &&
-            (1 <= connection->daemon->client_discipline))
+            (0 <= connection->daemon->client_discipline))
         {
           /* more than one header, bad */
           transmit_error_response_static (connection,