diff --git a/modules/purchase/purchase.py b/modules/purchase/purchase.py
index 3a42cbed94..63fcfa3d33 100644
--- a/modules/purchase/purchase.py
+++ b/modules/purchase/purchase.py
@@ -745,7 +745,11 @@ class Purchase(
 
     def check_for_quotation(self):
         for line in self.lines:
-            if (not line.to_location
+            if (line.quantity or 0) >= 0:
+                location = line.to_location
+            else:
+                location = line.from_location
+            if (not location
                     and line.product
                     and line.product.type in ('goods', 'assets')):
                 raise PurchaseQuotationError(