diff --git a/plexpy/notification_handler.py b/plexpy/notification_handler.py
index 0fb7d7d0..0a5b25d8 100644
--- a/plexpy/notification_handler.py
+++ b/plexpy/notification_handler.py
@@ -709,7 +709,7 @@ def build_media_notify_params(notify_action=None, session=None, timeline=None, m
         'server_machine_id': plexpy.CONFIG.PMS_IDENTIFIER,
         'server_platform': plexpy.CONFIG.PMS_PLATFORM,
         'server_version': plexpy.CONFIG.PMS_VERSION,
-        'action': notify_action.lstrip('on_'),
+        'action': notify_action.split('on_')[-1],
         'week_number': arrow.now().isocalendar()[1],
         'datestamp': arrow.now().format(date_format),
         'timestamp': arrow.now().format(time_format),
@@ -914,7 +914,7 @@ def build_server_notify_params(notify_action=None, **kwargs):
         'server_platform': plexpy.CONFIG.PMS_PLATFORM,
         'server_version': plexpy.CONFIG.PMS_VERSION,
         'server_machine_id': plexpy.CONFIG.PMS_IDENTIFIER,
-        'action': notify_action.lstrip('on_'),
+        'action': notify_action.split('on_')[-1],
         'datestamp': arrow.now().format(date_format),
         'timestamp': arrow.now().format(time_format),
         'unixtime': int(time.time()),