diff --git a/app/models/mixins/miq_web_server_worker_mixin.rb b/app/models/mixins/miq_web_server_worker_mixin.rb
index 15eb1e83cf3..368c662266a 100644
--- a/app/models/mixins/miq_web_server_worker_mixin.rb
+++ b/app/models/mixins/miq_web_server_worker_mixin.rb
@@ -118,7 +118,7 @@ def port_range
     end
 
     def add_apache_balancer_members
-      conf = MiqApache::Conf.instance(self::BALANCE_MEMBER_CONFIG_FILE)
+      conf = MiqApache::Conf.new(self::BALANCE_MEMBER_CONFIG_FILE)
       conf.add_ports(port_range.to_a, self::PROTOCOL)
       conf.save
     end