diff --git a/discord/automod.py b/discord/automod.py
index eabf42806..61683c269 100644
--- a/discord/automod.py
+++ b/discord/automod.py
@@ -518,7 +518,7 @@ class AutoModRule:
             payload['name'] = name
 
         if event_type is not MISSING:
-            payload['event_type'] = event_type
+            payload['event_type'] = event_type.value
 
         if trigger is not MISSING:
             trigger_metadata = trigger.to_metadata_dict()