diff --git a/view/book_tree.xml b/view/book_tree.xml
index c9ee764..c375777 100644
--- a/view/book_tree.xml
+++ b/view/book_tree.xml
@@ -5,7 +5,7 @@ full copyright notices and license terms. -->
 <data>
 
     <xpath expr="/tree/field[@name='balance']" position="after">
-        <field name="diff_amount" symbol="quantity_uom"/>
+        <field name="diff_amount" symbol="currency"/>
         <field name="diff_percent"/>
     </xpath>