diff --git a/app/admin.py b/app/admin.py
index 7a6f76f..d1a2e87 100644
--- a/app/admin.py
+++ b/app/admin.py
@@ -61,7 +61,7 @@ class ResourceAdmin(admin.ModelAdmin):
                 'doi',
                 'wiki_data_id',
             )
-        })
+        }),
     )
 
     def resource_url(self, instance):