diff --git a/mayan/apps/metadata/__init__.py b/mayan/apps/metadata/__init__.py
index 05fb0e4a2e..9f5c49f03f 100644
--- a/mayan/apps/metadata/__init__.py
+++ b/mayan/apps/metadata/__init__.py
@@ -58,7 +58,7 @@ def post_post_document_type_change_metadata(sender, instance, **kwargs):
         metadata.delete(enforce_required=False)
 
     # Add new document type metadata types to document
-    for metadata_type in instance.document_type.metadata_type.filter(required=True):
+    for metadata_type in instance.document_type.metadata.filter(required=True):
         DocumentMetadata.objects.create(document=instance, metadata_type=metadata_type, value=None)