diff --git a/openerp/import_xml.rng b/openerp/import_xml.rng
index 13409f05aa1..bf5a9e1800e 100644
--- a/openerp/import_xml.rng
+++ b/openerp/import_xml.rng
@@ -19,10 +19,8 @@
         <rng:element name="value">
             <rng:optional><rng:attribute name="model" /></rng:optional>
             <rng:optional><rng:attribute name="search" /></rng:optional>
-            <rng:optional>
-                <rng:attribute name="eval"/>
-            </rng:optional>
-            <rng:empty />
+            <rng:optional><rng:attribute name="eval" /></rng:optional>
+            <rng:optional><rng:text/></rng:optional>
         </rng:element>
     </rng:define>