diff --git a/demo/echo-client.el b/demo/echo-client.el
index 8f4b512..2fffffa 100644
--- a/demo/echo-client.el
+++ b/demo/echo-client.el
@@ -13,10 +13,10 @@
   (deferred:nextc it 
     (lambda (x) (message "Return : %S" x))))
 
-(epc:call-sync epc 'echo '(10 40))
-(epc:call-sync epc2 'add '(10 40))
+(message "%S" (epc:call-sync epc 'echo '(10 40)))
+(message "%S" (epc:call-sync epc2 'add '(10 40)))
 
-(epc:sync epc (epc:query-methods-deferred epc))
+(message "%S" (epc:sync epc (epc:query-methods-deferred epc)))
 
 (epc:stop-epc epc)
 (epc:stop-epc epc2)