diff --git a/datadog_callback.py b/datadog_callback.py
index 9d27ce7..c9694c0 100644
--- a/datadog_callback.py
+++ b/datadog_callback.py
@@ -124,7 +124,7 @@ def runner_on_failed(self, host, res, ignore_errors=False):
 
     def runner_on_ok(self, host, res):
         # Only send an event when the task has changed on the host
-        if res['changed']:
+        if res.get('changed'):
             event_text = "$$$\n{0}[{1}]\n$$$\n".format(res['invocation']['module_name'], res['invocation']['module_args'])
             self.send_task_event(
                 'Ansible task changed on "{0}"'.format(host),