diff --git a/stock.py b/stock.py
index 4e53710ede..5f88f79f9a 100644
--- a/stock.py
+++ b/stock.py
@@ -131,7 +131,7 @@ class Move:
             if consumed_qty >= quantity:
                 break
 
-            if type_.startswith('in_'):
+            if type_ == 'in_supplier':
                 with Transaction().set_context(date=move.effective_date):
                     unit_price = Currency.compute(move.currency,
                         move.unit_price, move.company.currency, round=False)