diff --git a/hy_odoo/odoo.hy b/hy_odoo/odoo.hy
index 929d669..46c023c 100644
--- a/hy_odoo/odoo.hy
+++ b/hy_odoo/odoo.hy
@@ -40,7 +40,11 @@
 ; XML helpers functions and macros
 
 (defn odoo [&rest args] (xmlroot (xmln "odoo" {} #*args)))
-(defn data [&rest args] (xmln "data" {} #*args))
+(defn data [&rest args]
+  (if (= (len args) 1)
+    (xmln "data" {} #*args)
+    (xmln "data" #*args)))
+(defn function [&rest args] (xmln "function" #*args))
 (defn record [&rest args] (xmln "record" #*args))
 (defn form [&rest args] (xmln "form" #*args))
 (defn tree [&rest args] (xmln "tree" #*args))