diff --git a/templates/dual-elasticsearch.vhost.erb b/templates/dual-elasticsearch.vhost.erb
index 3f4fc67..6f75740 100644
--- a/templates/dual-elasticsearch.vhost.erb
+++ b/templates/dual-elasticsearch.vhost.erb
@@ -3,7 +3,7 @@
   ServerAdmin <%= @serveradmin %>
 <% if @serveraliases.is_a? Array %>
 <% @serveraliases.each do |name| %><%= "  ServerAlias #{name}\n" %><% end %>
-<% elsif @serveraliases != '' %>
+<% elsif ! ['', nil].include?(@serveraliases) %>
 <%= "  ServerAlias #{@serveraliases}" %>
 <% end %>