diff --git a/addons/product/product_data.xml b/addons/product/product_data.xml
index 54e6fac5ce2..a33d66baffb 100644
--- a/addons/product/product_data.xml
+++ b/addons/product/product_data.xml
@@ -64,7 +64,7 @@
             <field name="category_id" ref="product_uom_categ_unit"/>
             <field name="name">Unit(s)</field>
             <field name="factor" eval="1.0"/>
-            <field name="rounding" eval="1.0"/>
+            <field name="rounding" eval="0.001"/>
         </record>
        <record id="product_uom_dozen" model="product.uom">
             <field name="category_id" ref="product.product_uom_categ_unit"/>