diff --git a/dns/templates/zone.master.erb b/dns/templates/zone.master.erb
index 942b498..c3a1a06 100644
--- a/dns/templates/zone.master.erb
+++ b/dns/templates/zone.master.erb
@@ -1,14 +1,20 @@
 zone "<%= zone %>" {
     type master;
-    <% if zone.match(/\//) %>
+<% if zone.match(/\//) -%>
     file "<%= zonedir %>/db.<%= zone.sub(/\//, '-') %>";
-    <% else %>
+<% else -%>
     file "<%= zonedir %>/db.<%= zone %>";
-    <% end -%>
+<% end -%>
     allow-transfer {
-    <% slaves.each_pair do |k, v| -%>
+<% if slaves != [] -%>
+<%     slaves.each_pair do |k, v| -%>
         <%= v['ip'] %>;
-    <% end -%>
+<%     end -%>
+<% else -%>
+        none;
+<% end -%>
+    };
+    allow-update {
+        none;
     };
-    allow-update { none; };
 };