diff --git a/lib/issues_save_hook_listener.rb b/lib/issues_save_hook_listener.rb
index dc83500..df4af63 100644
--- a/lib/issues_save_hook_listener.rb
+++ b/lib/issues_save_hook_listener.rb
@@ -43,7 +43,7 @@ class IssuesSaveHookListener < Redmine::Hook::ViewListener
      
       # If the issue is closed, then create a new billable time activty for the customer
       # TODO Add configuration settings for employee_id, hourly_rate, item_id
-      if issue.status.is_closed? and not issue.qbo_customer_id.nil? and not issue.qbo_item_id.nil? and not employee_id.nil? then
+      if issue.status.is_closed? and not issue.qbo_customer_id.nil? and not issue.qbo_item_id.nil? and not employee_id.nil? and spent_hours > 0 then
         time_entry.description = "Ticket ##{issue.id}: #{issue.subject}"
         time_entry.employee_id = employee_id
         time_entry.customer_id = issue.qbo_customer_id