diff --git a/lib/kamal/configuration/accessory.rb b/lib/kamal/configuration/accessory.rb
index f7edb81b..a510acba 100644
--- a/lib/kamal/configuration/accessory.rb
+++ b/lib/kamal/configuration/accessory.rb
@@ -215,9 +215,9 @@ class Kamal::Configuration::Accessory
     def extract_hosts_from_config_with_tag(tag)
       if (servers_with_roles = config.raw_config.servers).is_a?(Hash)
         servers_with_roles.flat_map do |role, servers_in_role|
-          servers_in_role.collect do |host|
+          servers_in_role.filter_map do |host|
             host.keys.first if host.is_a?(Hash) && host.values.first.include?(tag)
-          end.compact
+          end
         end
       end
     end