diff --git a/geomagio/api/ws/filter.py b/geomagio/api/ws/filter.py
index 1f288a6ef89b00cf9bef8fb2cd01fa3996f484bb..69516903bc7085621a48985709c5edc8068ae9d0 100644
--- a/geomagio/api/ws/filter.py
+++ b/geomagio/api/ws/filter.py
@@ -1,6 +1,6 @@
 from typing import List, Union, Optional
 from fastapi import Query
-from obspy import  Stream
+from obspy import Stream
 from ... import TimeseriesUtility
 import numpy as np
 from .DataApiQuery import (