1 files changed, 1 insertions, 1 deletions

diff --git a/src/microhttpd/response.c b/src/microhttpd/response.c
index 3fd98088..e12b44a8 100644
--- a/src/microhttpd/response.c
+++ b/src/microhttpd/response.c
@@ -1942,7 +1942,7 @@ MHD_create_response_for_upgrade (MHD_UpgradeHandler upgrade_handler,
 #endif
   response->upgrade_handler = upgrade_handler;
   response->upgrade_handler_cls = upgrade_handler_cls;
-  response->total_size = MHD_SIZE_UNKNOWN;
+  response->total_size = 0;
   response->reference_count = 1;
   if (MHD_NO ==
       MHD_add_response_header (response,