diff --git a/plugins/restapi2/services.yml b/plugins/restapi2/services.yml
index 9cf0a9f..c673e1f 100644
--- a/plugins/restapi2/services.yml
+++ b/plugins/restapi2/services.yml
@@ -110,7 +110,7 @@ parameters:
   pdoEx.dbname: dbname
 
 # phpList 4 parameters
-  config.configfile: config_file
+  config.configfile: null
   emailaddress.address: email_address
   password.password: password
   subscriberentity.emailaddress: placeholder