diff --git a/jupyter-server-kernel.el b/jupyter-server-kernel.el
index 7d86062..a5d9a53 100644
--- a/jupyter-server-kernel.el
+++ b/jupyter-server-kernel.el
@@ -355,8 +355,7 @@ Call the next method if ARGS does not contain :server."
                     (setq discarded t)))))))))
 
 (cl-defmethod jupyter-io ((kernel jupyter-server-kernel))
-  (jupyter-mlet* ((io (jupyter-server-kernel-io kernel)))
-    io))
+  (jupyter-server-kernel-io kernel))
 
 ;;; Kernel management