diff --git a/trytond/tryton.rnc b/trytond/tryton.rnc
index 33f3329947..cb4cff5c88 100644
--- a/trytond/tryton.rnc
+++ b/trytond/tryton.rnc
@@ -24,4 +24,5 @@ attlist.menuitem &= attribute sequence { text }?
 attlist.menuitem &= attribute parent { text }?
 attlist.menuitem &= attribute action { text }?
 attlist.menuitem &= attribute groups { text }?
+attlist.menuitem &= attribute active { text }?
 start = tryton