diff --git a/backend/models/proxy_host.js b/backend/models/proxy_host.js
index 07aa5dd3c..87ce17826 100644
--- a/backend/models/proxy_host.js
+++ b/backend/models/proxy_host.js
@@ -21,6 +21,7 @@ const boolFields = [
 	'enabled',
 	'hsts_enabled',
 	'hsts_subdomains',
+	'enable_proxy_protocol'
 ];
 
 class ProxyHost extends Model {