diff --git a/src/dispatch/plugins/dispatch_slack/middleware.py b/src/dispatch/plugins/dispatch_slack/middleware.py
index c10890a54de0..743485803d98 100644
--- a/src/dispatch/plugins/dispatch_slack/middleware.py
+++ b/src/dispatch/plugins/dispatch_slack/middleware.py
@@ -286,7 +286,7 @@ def user_middleware(
     else:
         user_info = client.users_info(user=user_id).get("user", {})
 
-        if user_info["is_bot"]:
+        if user_info.get("is_bot", False):
             return context.ack()
 
         email = user_info.get("profile", {}).get("email")