diff --git a/addons/mrp/mrp_data.xml b/addons/mrp/mrp_data.xml
index a6b65b7c475..48e623c532e 100644
--- a/addons/mrp/mrp_data.xml
+++ b/addons/mrp/mrp_data.xml
@@ -21,7 +21,7 @@ This application supports complete integration and production scheduling for sto
         <record id="sequence_mrp_prod" model="ir.sequence">
             <field name="name">Production order</field>
             <field name="code">mrp.production</field>
-            <field name="prefix">MO/</field>
+            <field name="prefix">MO</field>
             <field name="padding">5</field>
             <field name="number_next">1</field>
             <field name="number_increment">1</field>
diff --git a/addons/mrp/static/description/mrp_calendar.png b/addons/mrp/static/description/mrp_calendar.png
index a2d52775a0e..b8afb51443b 100644
Binary files a/addons/mrp/static/description/mrp_calendar.png and b/addons/mrp/static/description/mrp_calendar.png differ
diff --git a/addons/mrp/static/description/mrp_list.png b/addons/mrp/static/description/mrp_list.png
index 5813c32e6b7..39b249fdcf2 100644
Binary files a/addons/mrp/static/description/mrp_list.png and b/addons/mrp/static/description/mrp_list.png differ
diff --git a/addons/mrp/static/description/mrp_mo.png b/addons/mrp/static/description/mrp_mo.png
index 6138973570f..90417cedf83 100644
Binary files a/addons/mrp/static/description/mrp_mo.png and b/addons/mrp/static/description/mrp_mo.png differ