diff --git a/job_commands.py b/job_commands.py
index ece86ab..be34f7c 100644
--- a/job_commands.py
+++ b/job_commands.py
@@ -184,7 +184,7 @@ async def nag_callback(slack, msg, match):
     assigns = house_management.import_assignments()
 
     # Filter to day
-    assigns = [assign for assign in assigns if assign.job.day_of_week.lower() == day]
+    assigns = [assign for assign in assigns if assign is not None and assign.job.day_of_week.lower() == day]
 
     # Filter signed off
     assigns = [assign for assign in assigns if assign.signer is None]
diff --git a/slack_util.py b/slack_util.py
index 7fae433..c353790 100644
--- a/slack_util.py
+++ b/slack_util.py
@@ -62,7 +62,7 @@ def message_stream(slack: SlackClient) -> Generator[dict, None, None]:
             if slack.rtm_connect(with_team_state=False, auto_reconnect=True):
                 print("Waiting for messages")
                 while True:
-                    sleep(1)
+                    sleep(0.1)
                     update = slack.rtm_read()
                     for item in update:
                         if item.get('type') == 'message':