diff --git a/plexpy/helpers.py b/plexpy/helpers.py
index a5d9e2d4..3722d902 100644
--- a/plexpy/helpers.py
+++ b/plexpy/helpers.py
@@ -378,14 +378,14 @@ def create_https_certificates(ssl_cert, ssl_key):
 def cast_to_int(s):
     try:
         return int(s)
-    except ValueError:
-        return -1
+    except (ValueError, TypeError):
+        return 0
 
 def cast_to_float(s):
     try:
         return float(s)
-    except ValueError:
-        return -1
+    except (ValueError, TypeError):
+        return 0
 
 def convert_xml_to_json(xml):
     o = xmltodict.parse(xml)
diff --git a/plexpy/notification_handler.py b/plexpy/notification_handler.py
index 6962c298..0fda82e1 100644
--- a/plexpy/notification_handler.py
+++ b/plexpy/notification_handler.py
@@ -354,7 +354,7 @@ def build_notify_text(session=None, timeline=None, state=None):
 
     if server_times:
         updated_at = server_times[0]['updated_at']
-        server_uptime = helpers.human_duration(int(time.time() - helpers.cast_to_float(updated_at)))
+        server_uptime = helpers.human_duration(int(time.time() - helpers.cast_to_int(updated_at)))
     else:
         logger.error(u"PlexPy NotificationHandler :: Unable to retrieve server uptime.")
         server_uptime = 'N/A'
@@ -448,8 +448,8 @@ def build_notify_text(session=None, timeline=None, state=None):
     if state != 'play':
         stream_duration = helpers.convert_seconds_to_minutes(
                             time.time() - 
-                            helpers.cast_to_float(session.get('started', 0)) -
-                            helpers.cast_to_float(session.get('paused_counter', 0)))
+                            helpers.cast_to_int(session.get('started', 0)) -
+                            helpers.cast_to_int(session.get('paused_counter', 0)))
     else:
         stream_duration = 0
 
@@ -537,7 +537,7 @@ def build_notify_text(session=None, timeline=None, state=None):
                         'summary': metadata['summary'],
                         'tagline': metadata['tagline'],
                         'rating': metadata['rating'],
-                        'duration': metadata['duration'],
+                        'duration': duration,
                         'section_id': metadata['section_id'],
                         'rating_key': metadata['rating_key'],
                         'parent_rating_key': metadata['parent_rating_key'],
@@ -742,7 +742,7 @@ def build_server_notify_text(state=None):
 
     if server_times:
         updated_at = server_times[0]['updated_at']
-        server_uptime = helpers.human_duration(int(time.time() - helpers.cast_to_float(updated_at)))
+        server_uptime = helpers.human_duration(int(time.time() - helpers.cast_to_int(updated_at)))
     else:
         logger.error(u"PlexPy NotificationHandler :: Unable to retrieve server uptime.")
         server_uptime = 'N/A'