diff --git a/InvenTree/part/api.py b/InvenTree/part/api.py
index ac27b1c3bc..dbc1140214 100644
--- a/InvenTree/part/api.py
+++ b/InvenTree/part/api.py
@@ -1075,7 +1075,7 @@ class PartList(generics.ListCreateAPIView):
         'revision',
         'keywords',
         'category__name',
-        'MPN',
+        'manufacturer_parts__MPN',
     ]