diff --git a/modules/lang/org/config.el b/modules/lang/org/config.el
index 6f57f0474..ba588fea8 100644
--- a/modules/lang/org/config.el
+++ b/modules/lang/org/config.el
@@ -234,6 +234,7 @@ Also adds support for a `:sync' parameter to override `:async'."
                    (member (car info) org-babel-async-language-blacklist))
                (funcall fn arg info params))
               ((not (member (cdr (assq :session params)) '("none" nil)))
+               (message "Org babel :: :session is incompatible with :async. Executing synchronously!")
                nil)
               ((funcall orig-fn fn arg info params))))))