diff --git a/aws/lambda/Dockerfile b/aws/lambda/Dockerfile
index 5340c675d3..9716f1dc84 100644
--- a/aws/lambda/Dockerfile
+++ b/aws/lambda/Dockerfile
@@ -37,4 +37,4 @@ ENTRYPOINT [ "/usr/local/bin/python", "-m", "awslambdaric" ]
 # Set the Python import path to the Lambda function handler
 # This path is relative to the root of the Lambda function code (FUNCTION_DIR)
 # Lambda invocation will look for this path
-CMD ["example_handler.extract_wall_psets"]
+CMD ["example_handler.extract_wall_psets_handler"]
diff --git a/aws/lambda/example_handler/__init__.py b/aws/lambda/example_handler/__init__.py
index 5796334cf3..5256cb90a2 100644
--- a/aws/lambda/example_handler/__init__.py
+++ b/aws/lambda/example_handler/__init__.py
@@ -2,16 +2,16 @@ import ifcopenshell
 import ifcopenshell.util.element
 import boto3
 
-s3 = boto3.resource('s3')
+s3 = boto3.client('s3')
 
-def handler(event, context):
+def extract_wall_psets_handler(event, context):
     print("Hello from lambda")
     print("Event: {}".format(event))
     print("Context: {}".format(context))
 
     filename = event['body']['filename']
     
-    s3.Bucket('my_ifc_files').download_file(filename, f'/tmp/{filename}')
+    s3.download_file('my_ifc_files_bucket', filename, f'/tmp/{filename}')
     ifc_file = ifcopenshell.open(f'/tmp/{filename}')
     walls = ifc_file.by_type('IfcWall')