diff --git a/opentech/apply/review/views.py b/opentech/apply/review/views.py
index 0d8d23ae1ef714fbb7d7ae3d5825b78f150b6c5d..c58c64fd0968a43f3ce13a3df3f6ec517d633a5b 100644
--- a/opentech/apply/review/views.py
+++ b/opentech/apply/review/views.py
@@ -92,7 +92,7 @@ class ReviewListView(ListView):
                     # Update the stored value to the display value
                     value = choices[int(value)]
 
-                review_data.setdefault(field.label, []).append(value)
+                review_data.setdefault(field.label, []).append(str(value))
 
         return super().get_context_data(
             submission=self.submission,