diff --git a/aurora/models/change.py b/aurora/models/change.py
index cece847..d3fdd99 100644
--- a/aurora/models/change.py
+++ b/aurora/models/change.py
@@ -30,7 +30,7 @@ class Change(AuroraBaseModel):
     def from_dict(cls, bot: Red, data: dict) -> "Change":
         if isinstance(data, str):
             data = json.loads(data)
-        if "duration" in data and data["duration"] and not isinstance(data["duration"], timedelta):
+        if "duration" in data and data["duration"] and not isinstance(data["duration"], timedelta) and not data["duration"] == "NULL":
             hours, minutes, seconds = map(int, data["duration"].split(':'))
             duration = timedelta(hours=hours, minutes=minutes, seconds=seconds)
         elif "duration" in data and isinstance(data["duration"], timedelta):