diff --git a/aws_lambda_powertools/utilities/data_classes/dynamo_db_stream_event.py b/aws_lambda_powertools/utilities/data_classes/dynamo_db_stream_event.py
index db581ceaf7d..bc3a4a82995 100644
--- a/aws_lambda_powertools/utilities/data_classes/dynamo_db_stream_event.py
+++ b/aws_lambda_powertools/utilities/data_classes/dynamo_db_stream_event.py
@@ -35,7 +35,7 @@ def bool_value(self) -> Optional[bool]:
         Example:
             >>> {"BOOL": True}
         """
-        item = self.get("bool")
+        item = self.get("BOOL")
         return None if item is None else bool(item)
 
     @property