diff --git a/azure-iot-device/azure/iot/device/custom_typing.py b/azure-iot-device/azure/iot/device/custom_typing.py
index 782131903..2c1508fd4 100644
--- a/azure-iot-device/azure/iot/device/custom_typing.py
+++ b/azure-iot-device/azure/iot/device/custom_typing.py
@@ -37,4 +37,5 @@ class StorageInfo(TypedDict):
     blobName: str
     sasToken: str
 
-ProvisioningPayload =  Union[Dict[str, Any], str, int]
\ No newline at end of file
+
+ProvisioningPayload = Union[Dict[str, Any], str, int]