diff --git a/src/bornhack/environment_settings.py.dist b/src/bornhack/environment_settings.py.dist
index e5f15046..09b56c8f 100644
--- a/src/bornhack/environment_settings.py.dist
+++ b/src/bornhack/environment_settings.py.dist
@@ -57,7 +57,7 @@ EPAY_MD5_SECRET='{{ epay_md5_secret }}'
 COINIFY_API_KEY='{{ coinify_api_key }}'
 COINIFY_API_SECRET='{{ coinify_api_secret }}'
 COINIFY_IPN_SECRET='{{ coinify_ipn_secret }}'
-COINIFY_CALLBACK_HOSTNAME='{{ coinify_callback_hostname }}' # leave empty or comment out to use hostname from request
+COINIFY_CALLBACK_HOSTNAME='{{ coinify_callback_hostname | default('') }}' # leave empty or comment out to use hostname from request
 
 # shop settings
 PDF_LETTERHEAD_FILENAME='{{ pdf_letterhead_filename }}'