diff --git a/changedetectionio/update_worker.py b/changedetectionio/update_worker.py
index 697abbc1..906616d3 100644
--- a/changedetectionio/update_worker.py
+++ b/changedetectionio/update_worker.py
@@ -21,9 +21,12 @@ class update_worker(threading.Thread):
         self.datastore = datastore
         super().__init__(*args, **kwargs)
 
-    def send_content_changed_notification(self, uuid):
+    def send_content_changed_notification(self, t, watch_uuid):
+
+        from changedetectionio import diff
+
         n_object = {}
-        watch = self.datastore.data['watching'].get(uuid, False)
+        watch = self.datastore.data['watching'].get(watch_uuid, False)
         if not watch:
             return
 
@@ -38,7 +41,7 @@ class update_worker(threading.Thread):
 
         # Did it have any notification alerts to hit?
         if len(watch['notification_urls']):
-            print(">>> Notifications queued for UUID from watch {}".format(uuid))
+            print(">>> Notifications queued for UUID from watch {}".format(watch_uuid))
             n_object['notification_urls'] = watch['notification_urls']
             n_object['notification_title'] = watch['notification_title']
             n_object['notification_body'] = watch['notification_body']
@@ -46,7 +49,7 @@ class update_worker(threading.Thread):
 
         # No? maybe theres a global setting, queue them all
         elif len(self.datastore.data['settings']['application']['notification_urls']):
-            print(">>> Watch notification URLs were empty, using GLOBAL notifications for UUID: {}".format(uuid))
+            print(">>> Watch notification URLs were empty, using GLOBAL notifications for UUID: {}".format(watch_uuid))
             n_object['notification_urls'] = self.datastore.data['settings']['application']['notification_urls']
             n_object['notification_title'] = self.datastore.data['settings']['application']['notification_title']
             n_object['notification_body'] = self.datastore.data['settings']['application']['notification_body']
@@ -62,15 +65,13 @@ class update_worker(threading.Thread):
             else:
                 line_feed_sep = "\n"
 
-            from changedetectionio import diff
-
             snapshot_contents = ''
             with open(watch_history[dates[-1]], 'rb') as f:
                 snapshot_contents = f.read()
 
             n_object.update({
                 'watch_url': watch['url'],
-                'uuid': uuid,
+                'uuid': watch_uuid,
                 'current_snapshot': snapshot_contents.decode('utf-8'),
                 'diff': diff.render_diff(watch_history[dates[-2]], watch_history[dates[-1]], line_feed_sep=line_feed_sep),
                 'diff_full': diff.render_diff(watch_history[dates[-2]], watch_history[dates[-1]], True, line_feed_sep=line_feed_sep)
@@ -78,10 +79,10 @@ class update_worker(threading.Thread):
 
             self.notification_q.put(n_object)
 
-    def send_filter_failure_notification(self, uuid):
+    def send_filter_failure_notification(self, watch_uuid):
 
         threshold = self.datastore.data['settings']['application'].get('filter_failure_notification_threshold_attempts')
-        watch = self.datastore.data['watching'].get(uuid, False)
+        watch = self.datastore.data['watching'].get(watch_uuid, False)
 
         n_object = {'notification_title': 'Changedetection.io - Alert - CSS/xPath filter was not present in the page',
                     'notification_body': "Your configured CSS/xPath filter of '{}' for {{watch_url}} did not appear on the page after {} attempts, did the page change layout?\n\nLink: {{base_url}}/edit/{{watch_uuid}}\n\nThanks - Your omniscient changedetection.io installation :)\n".format(
@@ -99,10 +100,10 @@ class update_worker(threading.Thread):
         if 'notification_urls' in n_object:
             n_object.update({
                 'watch_url': watch['url'],
-                'uuid': uuid
+                'uuid': watch_uuid
             })
             self.notification_q.put(n_object)
-            print("Sent filter not found notification for {}".format(uuid))
+            print("Sent filter not found notification for {}".format(watch_uuid))
 
     def run(self):
         from changedetectionio import fetch_site_status
@@ -215,7 +216,7 @@ class update_worker(threading.Thread):
                                     # Atleast 2, means there really was a change
                                     self.datastore.update_watch(uuid=uuid, update_obj={'last_changed': round(now)})
                                     if not self.datastore.data['watching'][uuid].get('notification_muted'):
-                                        self.send_content_changed_notification(self, uuid)
+                                        self.send_content_changed_notification(self, watch_uuid=uuid)
 
 
                         except Exception as e: