diff --git a/lualib/http/httpd.lua b/lualib/http/httpd.lua
index 5f8f6de8..944c9584 100644
--- a/lualib/http/httpd.lua
+++ b/lualib/http/httpd.lua
@@ -130,6 +130,7 @@ local function writeall(writefunc, statuscode, bodyfunc, header)
 				end
 			else
 				writefunc("\r\n0\r\n\r\n")
+				break
 			end
 		end
 	else