diff --git a/opentech/apply/review/views.py b/opentech/apply/review/views.py
index ae8f958253b6bb0851ee392a9110ad6ecd4ab650..0d8d23ae1ef714fbb7d7ae3d5825b78f150b6c5d 100644
--- a/opentech/apply/review/views.py
+++ b/opentech/apply/review/views.py
@@ -72,7 +72,7 @@ class ReviewListView(ListView):
 
         for review in self.object_list:
             # Add the name header row
-            review_data.setdefault('', []).append(review.author)
+            review_data.setdefault('', []).append(str(review.author))
 
         for name, field in form_used.base_fields.items():
             try: