diff --git a/purchase.py b/purchase.py
index 3adae99c30..03c1bb9d79 100644
--- a/purchase.py
+++ b/purchase.py
@@ -513,13 +513,15 @@ class CreatePurchaseRequestQuotation(Wizard):
         quotations = []
         lines = []
 
-        reqs = [r for r in self.records if r.state in ['draft', 'quotation']]
+        requests = [
+            r for r in self.records if r.state in ['draft', 'quotation']]
         for supplier in self.ask_suppliers.suppliers:
-            reqs = [r for r in reqs if self.filter_request(r, supplier)]
-            sorted_reqs = sorted(
-                reqs, key=sortable_values(self._group_request_key))
-            for key, grouped_requests in groupby(sorted_reqs,
-                    key=self._group_request_key):
+            sub_requests = [
+                r for r in requests if self.filter_request(r, supplier)]
+            sub_requests = sorted(
+                sub_requests, key=sortable_values(self._group_request_key))
+            for key, grouped_requests in groupby(
+                    sub_requests, key=self._group_request_key):
                 quotation = self.get_quotation(supplier, key)
                 for request in grouped_requests:
                     line = self.get_quotation_line(request, quotation)
@@ -529,7 +531,7 @@ class CreatePurchaseRequestQuotation(Wizard):
         QuotationLine.save(lines)
         Quotation.save(quotations)
 
-        self.model.update_state(reqs)
+        self.model.update_state(requests)
         self.succeed.number_quotations = len(quotations)
         return 'succeed'