diff --git a/moderation/moderation.py b/moderation/moderation.py
index f25109e..b9a5a20 100644
--- a/moderation/moderation.py
+++ b/moderation/moderation.py
@@ -1788,11 +1788,13 @@ class Moderation(commands.Cog):
 
                 timestamp = round(case['timestamp'] / 1000)
 
-                if case['duration']:
+                if case['duration'] is not None:
                     try:
                         duration = timedelta(seconds=round(float(case['duration']) / 1000))
                     except OverflowError:
                         continue
+                else:
+                    duration = timedelta(seconds=0)
 
                 if case['resolved']:
                     resolved = 1