diff --git a/InvenTree/company/api.py b/InvenTree/company/api.py
index 66557b783b..494b3652b2 100644
--- a/InvenTree/company/api.py
+++ b/InvenTree/company/api.py
@@ -131,7 +131,7 @@ class ManufacturerPartList(generics.ListCreateAPIView):
         params = self.request.query_params
 
         # Filter by manufacturer
-        manufacturer = params.get('company', None)
+        manufacturer = params.get('manufacturer', None)
 
         if manufacturer is not None:
             queryset = queryset.filter(manufacturer=manufacturer)
diff --git a/InvenTree/company/serializers.py b/InvenTree/company/serializers.py
index 35e84aac1e..335a351583 100644
--- a/InvenTree/company/serializers.py
+++ b/InvenTree/company/serializers.py
@@ -192,10 +192,11 @@ class SupplierPartSerializer(InvenTreeModelSerializer):
         manufacturer_id = self.initial_data.get('manufacturer', None)
         MPN = self.initial_data.get('MPN', None)
 
-        if manufacturer_id or MPN:
-            kwargs = {'manufacturer': manufacturer_id,
-                      'MPN': MPN,
-                      }
+        if manufacturer_id and MPN:
+            kwargs = {
+                'manufacturer': manufacturer_id,
+                'MPN': MPN,
+            }
             supplier_part.save(**kwargs)
 
         return supplier_part