diff --git a/cognite/client/data_classes/functions.py b/cognite/client/data_classes/functions.py
index f8af1e47b0..b534a13e89 100644
--- a/cognite/client/data_classes/functions.py
+++ b/cognite/client/data_classes/functions.py
@@ -373,7 +373,7 @@ def __init__(self, timestamp: int, message: str):
     def _load(cls, response: Dict[str, Any]) -> FunctionCallLogEntry:
         return cls(
             timestamp=response["timestamp"],
-            message=response["message"],
+            message=response.get("message", ""),
         )