diff --git a/ejabberd/templates/ejabberd.cfg.erb b/ejabberd/templates/ejabberd.cfg.erb
index 649dc4a..a802075 100644
--- a/ejabberd/templates/ejabberd.cfg.erb
+++ b/ejabberd/templates/ejabberd.cfg.erb
@@ -89,8 +89,8 @@ override_acls.
 %% You can define one or several, for example:
 %% {hosts, ["example.net", "example.com", "example.org"]}.
 %%
-<% @hosts.map! { |host| '"%s"' % host } -%>
-{hosts, [<%= @hosts.join(", ") %>]}.
+<% hosts = @hosts.map { |host| '"%s"' % host } -%>
+{hosts, [<%= hosts.join(", ") %>]}.
 
 %%
 %% route_subdomains: Delegate subdomains to other XMPP servers.
@@ -222,8 +222,8 @@ override_acls.
 {extauth_program, "<%= @extauth %>"}.
 <% end -%>
 <% if @ldap_server -%>
-<% @ldap_server.map! { |server| '"%s"' % server } -%>
-{ldap_servers, [<%= @ldap_server.join(", ") %>]}.
+<% ldap_server = @ldap_server.map { |server| '"%s"' % server } -%>
+{ldap_servers, [<%= ldap_server.join(", ") %>]}.
 {ldap_base, "<%= @ldap_basedn %>"}.
 {ldap_encrypt, <%= @ldap_encrypt %>}.
 {ldap_port, <%= @ldap_port %>}.