diff --git a/samba/templates/smb.conf.erb b/samba/templates/smb.conf.erb
index 6bf4785..96b066a 100644
--- a/samba/templates/smb.conf.erb
+++ b/samba/templates/smb.conf.erb
@@ -2,7 +2,7 @@
 [global]
 
 # host naming
-workgroup = <%= @workgroup %>
+workgroup = <%= @workgroup.upcase %>
 server string = <%= @description %>
 netbios name = <%= @names[0] %>
 <% if @names.length > 1 -%>