diff --git a/changedetectionio/flask_app.py b/changedetectionio/flask_app.py
index 5fc0f48d..3a3bb0f8 100644
--- a/changedetectionio/flask_app.py
+++ b/changedetectionio/flask_app.py
@@ -124,7 +124,7 @@ def _jinja2_filter_datetime(watch_obj, format="%Y-%m-%d %H:%M:%S"):
 
 @app.template_filter('format_timestamp_timeago')
 def _jinja2_filter_datetimestamp(timestamp, format="%Y-%m-%d %H:%M:%S"):
-    if timestamp == False:
+    if not timestamp:
         return 'Not yet'
 
     return timeago.format(int(timestamp), time.time())