diff --git a/openerp/addons/base/ir/ir_actions.xml b/openerp/addons/base/ir/ir_actions.xml
index 82514692c06..145627058ef 100644
--- a/openerp/addons/base/ir/ir_actions.xml
+++ b/openerp/addons/base/ir/ir_actions.xml
@@ -297,7 +297,7 @@
 
         <record id="property_rule" model="ir.rule">
             <field name="name">Property multi-company</field>
-            <field model="ir.model" name="model_id" ref="model_ir_property"/>
+            <field name="model_id" ref="model_ir_property"/>
             <field eval="True" name="global"/>
             <field name="domain_force">['|',('company_id','child_of',[user.company_id.id]),('company_id','=',False)]</field>
         </record>
diff --git a/openerp/addons/base/ir/ir_filters.xml b/openerp/addons/base/ir/ir_filters.xml
index 72c5dad8885..88cc4b9838a 100644
--- a/openerp/addons/base/ir/ir_filters.xml
+++ b/openerp/addons/base/ir/ir_filters.xml
@@ -4,7 +4,7 @@
         <!-- Restrict modifications on ir.filters to owner only -->
         <record id="ir_filters_rule" model="ir.rule">
             <field name="name">ir.filters.owner</field>
-            <field model="ir.model" name="model_id" ref="model_ir_filters"/>
+            <field name="model_id" ref="model_ir_filters"/>
             <field name="domain_force">[('user_id','in',[False,user.id])]</field>
         </record>
     </data>
diff --git a/openerp/addons/base/res/res_security.xml b/openerp/addons/base/res/res_security.xml
index 783243411ef..0c8c0202d60 100644
--- a/openerp/addons/base/res/res_security.xml
+++ b/openerp/addons/base/res/res_security.xml
@@ -16,7 +16,7 @@
         <!-- Record Rule For Company -->
         <record id="res_company_rule" model="ir.rule">
             <field name="name">company rule</field>
-            <field model="ir.model" name="model_id" ref="model_res_company"/>
+            <field name="model_id" ref="model_res_company"/>
             <field eval="True" name="global"/>
             <!-- TODO: review this <field name="domain_force">['|', ('child_ids', 'child_of', [user.company_id.id]), ('parent_id', 'child_of', [user.company_id.id])]</field> -->
             <field name="domain_force">[('id','child_of',[user.company_id.id])]</field>
@@ -25,7 +25,7 @@
         <!-- Record Rule For User -->
         <record id="res_users_rule" model="ir.rule">
             <field name="name">user rule</field>
-            <field model="ir.model" name="model_id" ref="model_res_users"/>
+            <field name="model_id" ref="model_res_users"/>
             <field eval="True" name="global"/>
             <field name="domain_force">[('company_ids','child_of',[user.company_id.id])]</field>
         </record>
diff --git a/openerp/import_xml.rng b/openerp/import_xml.rng
index 5f4c40b65d3..c055009a35d 100644
--- a/openerp/import_xml.rng
+++ b/openerp/import_xml.rng
@@ -1,17 +1,18 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<rng:grammar xmlns:rng="http://relaxng.org/ns/structure/1.0">
+<rng:grammar xmlns:rng="http://relaxng.org/ns/structure/1.0"
+        datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
     <rng:define name="any">
-      <rng:element>
-        <rng:anyName/>
-        <rng:zeroOrMore>
-            <rng:choice>
-            <rng:attribute>
+        <rng:element>
             <rng:anyName/>
-            </rng:attribute>
-            <rng:text/>
-            <rng:ref name="any"/>
-            </rng:choice>
-        </rng:zeroOrMore>
+            <rng:zeroOrMore>
+                <rng:choice>
+                    <rng:attribute>
+                        <rng:anyName/>
+                    </rng:attribute>
+                    <rng:text/>
+                    <rng:ref name="any"/>
+                </rng:choice>
+            </rng:zeroOrMore>
         </rng:element>
     </rng:define>
 
@@ -125,19 +126,66 @@
     <rng:define name="field">
         <rng:element name="field">
             <rng:attribute name="name" />
-            <rng:optional><rng:attribute name="type"/></rng:optional>
-            <rng:optional><rng:attribute name="ref"/></rng:optional>
-            <rng:optional><rng:attribute name="eval"/></rng:optional>
-            <rng:optional><rng:attribute name="domain"/></rng:optional>
-            <rng:optional><rng:attribute name="search"/></rng:optional>
-            <rng:optional><rng:attribute name="model"/></rng:optional>
-            <rng:optional><rng:attribute name="use"/></rng:optional>
-            <rng:oneOrMore>
-                <rng:choice>
-                    <rng:ref name="any"/>
+            <rng:choice>
+                <rng:group>
+                    <rng:attribute name="type">
+                        <rng:choice>
+                            <rng:value>char</rng:value>
+                            <rng:value>file</rng:value>
+                        </rng:choice>
+                    </rng:attribute>
                     <rng:text/>
-                </rng:choice>
-            </rng:oneOrMore>
+                </rng:group>
+                <rng:group>
+                    <rng:attribute name="type"><rng:value>int</rng:value></rng:attribute>
+                    <rng:choice>
+                        <rng:data type="int"/>
+                        <rng:value>None</rng:value>
+                    </rng:choice>
+                </rng:group>
+                <rng:group>
+                    <rng:attribute name="type"><rng:value>float</rng:value></rng:attribute>
+                    <rng:data type="float"/>
+                </rng:group>
+                <rng:group>
+                    <rng:attribute name="type">
+                        <rng:choice>
+                            <rng:value>list</rng:value>
+                            <rng:value>tuple</rng:value>
+                        </rng:choice>
+                    </rng:attribute>
+                    <rng:oneOrMore><rng:ref name="value"/></rng:oneOrMore>
+                </rng:group>
+                <rng:group>
+                    <rng:attribute name="type">
+                        <rng:choice>
+                            <rng:value>html</rng:value>
+                            <rng:value>xml</rng:value>
+                        </rng:choice>
+                    </rng:attribute>
+                    <rng:oneOrMore>
+                        <rng:ref name="any"/>
+                    </rng:oneOrMore>
+                </rng:group>
+                <rng:group>
+                    <rng:attribute name="ref"/>
+                    <rng:empty/>
+                </rng:group>
+                <rng:group>
+                    <rng:attribute name="eval"/>
+                    <rng:optional><rng:attribute name="model"/></rng:optional>
+                    <rng:empty/>
+                </rng:group>
+                <rng:group>
+                    <rng:attribute name="search"/>
+                    <rng:attribute name="model"/>
+                    <rng:optional><rng:attribute name="use"/></rng:optional>
+                    <rng:empty/>
+                </rng:group>
+                <rng:group>
+                    <rng:text/>
+                </rng:group>
+            </rng:choice>
         </rng:element>
     </rng:define>