diff --git a/src/c3nav/editor/views/changes.py b/src/c3nav/editor/views/changes.py
index e1dab114..ef457d77 100644
--- a/src/c3nav/editor/views/changes.py
+++ b/src/c3nav/editor/views/changes.py
@@ -308,15 +308,16 @@ def changeset_detail(request, pk):
                     else:
                         field = model._meta.get_field(name)
                         field_title = field.verbose_name
-                        field_value = field.to_python(value)
                         if field.related_model is not None:
                             if issubclass(field.related_model, User):
-                                field_value = objects[field.related_model][field_value].username
+                                field_value = objects[field.related_model][value].username
                             else:
-                                field_value = objects[field.related_model][field_value].title
+                                field_value = objects[field.related_model][value].title
                             change_data.update({
                                 'missing_dependency': field.name in missing_dependencies,
                             })
+                        else:
+                            field_value = field.to_python(value)
                         if name in unique_collisions:
                             change_data.update({
                                 'unique_collision': field.name in unique_collisions,