diff --git a/addons/product/__openerp__.py b/addons/product/__openerp__.py
index fdadda2e4d4..c1799918b1b 100644
--- a/addons/product/__openerp__.py
+++ b/addons/product/__openerp__.py
@@ -67,5 +67,6 @@ Print product labels with barcode.
     'installable': True,
     'auto_install': False,
     'images': ['images/product_uom.jpeg','images/product_pricelists.jpeg','images/products_categories.jpeg', 'images/products_form.jpeg'],
+    'css': ['static/css/product.css']
 }
 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
diff --git a/addons/product/product.py b/addons/product/product.py
index ff67f5d5cc6..d807c1f916d 100644
--- a/addons/product/product.py
+++ b/addons/product/product.py
@@ -148,14 +148,14 @@ class product_uom(osv.osv):
     _sql_constraints = [
         ('factor_gt_zero', 'CHECK (factor!=0)', 'The conversion ratio for a unit of measure cannot be 0!')
     ]
-
+    
     def onchange_category_id(self, cr, uid, ids, category_id):
-    	reference_uom = False
-	if category_id:
-	    uom_ids = self.search(cr, uid, [('category_id', '=',category_id),('uom_type', '=', 'reference')])
-	    if uom_ids:
-	        reference_uom = uom_ids[0]
-    return {'value':{'reference_uom_id': reference_uom}}
+        reference_uom = False
+        if category_id:
+            uom_ids = self.search(cr, uid, [('category_id', '=',category_id),('uom_type', '=', 'reference')])
+            if uom_ids:
+                reference_uom = uom_ids[0]
+        return {'value':{'reference_uom_id': reference_uom}}
 
     def _compute_qty(self, cr, uid, from_uom_id, qty, to_uom_id=False):
         if not from_uom_id or not qty or not to_uom_id:
diff --git a/addons/product/product_view.xml b/addons/product/product_view.xml
index e517fed6061..3672e6a6e68 100644
--- a/addons/product/product_view.xml
+++ b/addons/product/product_view.xml
@@ -468,7 +468,7 @@
                             <field name="uom_type" on_change="onchange_type(uom_type)"/>
                             <label string="Computation" for="factor" attrs="{'invisible':[('uom_type','=','reference')]}" style="margin: 9px 0 9px 0;"/>
                             <group col="5" attrs="{'invisible':[('uom_type','=','reference')]}">
-                            <div style="margin-left: -12px;">
+                            <div class="oe_moveleft">
                                 <field name="factor_inv" class="oe_inline" attrs="{'invisible':[('uom_type','!=','bigger')]}" String="Computation" nolabel="1"/>
                                 <label string="1" attrs="{'invisible':[('uom_type','!=','smaller')]}"/>
                                 <field class="oe_inline" name="reference_uom_id" attrs="{'invisible':[('uom_type','=','reference')]}" nolabel="1"/>
diff --git a/addons/product/static/css/product.css b/addons/product/static/css/product.css
new file mode 100644
index 00000000000..af27eaeabae
--- /dev/null
+++ b/addons/product/static/css/product.css
@@ -0,0 +1,3 @@
+.oe_moveleft{
+    margin-left: -12px;
+}