diff --git a/templates/cmd_rule.erb b/templates/cmd_rule.erb
index 76a327c..5b09abb 100644
--- a/templates/cmd_rule.erb
+++ b/templates/cmd_rule.erb
@@ -1,5 +1,5 @@
 
-<% unless @ne_cmd_comment.empty? -%>
+<% unless @ne_cmd_comment.nil? -%>
 # <%= @ne_cmd_comment %>
 <% end -%>
 command[<%= @ne_check_name %>]=<%= @ne_cmd_path %><%= @ne_check_cmd %> <%= @ne_cmd_argstring %>