diff --git a/modules/purchase/purchase.py b/modules/purchase/purchase.py
index 4e12f26..7600fea 100755
--- a/modules/purchase/purchase.py
+++ b/modules/purchase/purchase.py
@@ -1005,6 +1005,11 @@ class Purchase(
             for purchase in purchases:
                 logger.info("PROCESS_INVOICE:%s",action)
                 invoice = purchase.create_invoice(lots,action)
+                #check if forex
+                forex_rate = invoice.get_forex()
+                if forex_rate:
+                    invoice.selection_rate = 'forex'
+                    
                 if action == 'prov':
                     invoice.reference = 'Provisional'
                 elif action == 'service':