diff --git a/addons/procurement/procurement.py b/addons/procurement/procurement.py
index 1439b323173..aa26ee228b3 100644
--- a/addons/procurement/procurement.py
+++ b/addons/procurement/procurement.py
@@ -192,7 +192,11 @@ class procurement_order(osv.osv):
         return self.write(cr, uid, ids, {'state': 'confirmed'}, context=context)
 
     def run(self, cr, uid, ids, context=None):
-        for procurement in self.browse(cr, uid, ids, context=context):
+        for procurement_id in ids:
+            #we intentionnaly do the browse under the for loop to avoid caching all ids which would be ressource greedy
+            #and useless as we'll make a refresh later that will invalidate all the cache (and thus the next iteration
+            #will fetch all the ids again) 
+            procurement = self.browse(cr, uid, procurement_id, context=context)
             if procurement.state not in ("running", "done"):
                 if self._assign(cr, uid, procurement, context=context):
                     procurement.refresh()