diff --git a/azure/functions/blob.py b/azure/functions/blob.py
index d50b246a..1b392739 100644
--- a/azure/functions/blob.py
+++ b/azure/functions/blob.py
@@ -75,6 +75,9 @@ def encode(cls, obj: typing.Any, *,
 
     @classmethod
     def decode(cls, data: meta.Datum, *, trigger_metadata) -> typing.Any:
+        if data is None or data.type is None:
+            return None
+            
         data_type = data.type
 
         if data_type == 'string':