diff --git a/pipeline/aws_infra/cdk_classes/aws_batch.py b/pipeline/aws_infra/cdk_classes/aws_batch.py
index 0f492150..7bba9d94 100644
--- a/pipeline/aws_infra/cdk_classes/aws_batch.py
+++ b/pipeline/aws_infra/cdk_classes/aws_batch.py
@@ -55,7 +55,7 @@ def __init__(self, scope: Stack, env_suffix: str, shared_work_dir_bucket: Option
                 bucket_name=shared_work_dir_bucket)
 
         # Create the IAM policy to grant access to the nextflow output bucket
-        s3_bucket_access_statements=[
+        s3_bucket_access_statements = [
             iam.PolicyStatement(
                 sid="S3BucketWriteAll",
                 effect=iam.Effect.ALLOW,