diff --git a/opentech/settings/base.py b/opentech/settings/base.py
index 81a3598a1c4251b2102a57ab8dd36dac1ab67170..0dc8748be3a69406f2f5714b73a51a28536916af 100644
--- a/opentech/settings/base.py
+++ b/opentech/settings/base.py
@@ -393,6 +393,9 @@ if 'AWS_STORAGE_BUCKET_NAME' in env:
     if 'AWS_QUERYSTRING_EXPIRE' in env:
         AWS_QUERYSTRING_EXPIRE = env['AWS_QUERYSTRING_EXPIRE']
 
+    if 'AWS_PUBLIC_CUSTOM_DOMAIN' in env:
+        AWS_PUBLIC_CUSTOM_DOMAIN = env['AWS_PUBLIC_CUSTOM_DOMAIN']
+
     INSTALLED_APPS += (
         'storages',
     )