diff --git a/CHANGELOG b/CHANGELOG
index a9d15f7319..d6bee73fdc 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,4 @@
+* Add richtext widget for WYSIWYG editor
 * Add support of fields.Time
 * Replace nested view by reference id
 * Remove underscore to ir.translation methods
diff --git a/trytond/ir/ui/form.rnc b/trytond/ir/ui/form.rnc
index 37857adf03..43f195a27c 100644
--- a/trytond/ir/ui/form.rnc
+++ b/trytond/ir/ui/form.rnc
@@ -63,6 +63,7 @@ attlist.field &=
     | "many2many"
     | "image"
     | "progressbar"
+    | "richtext"
   }?
 attlist.field &= attribute fill { "0" | "1" }?
 attlist.field &= attribute yexpand { "0" | "1" }?
diff --git a/trytond/ir/ui/form.rng b/trytond/ir/ui/form.rng
index dc68150f46..9dc5062104 100644
--- a/trytond/ir/ui/form.rng
+++ b/trytond/ir/ui/form.rng
@@ -162,6 +162,7 @@
           <value>many2many</value>
           <value>image</value>
           <value>progressbar</value>
+          <value>richtext</value>
         </choice>
       </attribute>
     </optional>