diff --git a/source/clog-connection-websockets.lisp b/source/clog-connection-websockets.lisp
index dda8a66..148d87b 100644
--- a/source/clog-connection-websockets.lisp
+++ b/source/clog-connection-websockets.lisp
@@ -414,7 +414,7 @@ the contents sent to the brower."
                       lack-middleware-list
                       :initial-value *app*
                       :from-end t))
-  (setf *client-handler* (clack:clackup *app* :server server :address host :port port :ssl ssl :ssl-key-file ssl-key-file :ssl-cert-file ssl-cert-file))
+  (setf *client-handler* (clack:clackup *app* :debug nil :server server :address host :port port :ssl ssl :ssl-key-file ssl-key-file :ssl-cert-file ssl-cert-file))
   (format t "HTTP listening on    : ~A:~A~%" host port)
   (format t "HTML root            : ~A~%"    static-root)
   (format t "SSL                  : ~A~%"    (if ssl