diff --git a/tests/integration/helpers/utils.py b/tests/integration/helpers/utils.py
index cf24c52d6..c8c9770a6 100644
--- a/tests/integration/helpers/utils.py
+++ b/tests/integration/helpers/utils.py
@@ -6,6 +6,7 @@
 
 NAMESPACE_NAME = "test_core"
 
+
 def create_test_extension(specs, container_classes, mappers=None):
     ns_builder = NWBNamespaceBuilder(
         name=NAMESPACE_NAME,
@@ -27,4 +28,4 @@ def create_test_extension(specs, container_classes, mappers=None):
             type_map.register_map(container_cls, mapper_cls)
 
     output_dir.cleanup()
-    return type_map
\ No newline at end of file
+    return type_map