diff --git a/geomagio/api/ws/filter.py b/geomagio/api/ws/filter.py
index 95853f865ba97f002a30acb1a7e47efe56062618..11c24dd0614549cda6ed1c0d82f830f0a59ba55a 100644
--- a/geomagio/api/ws/filter.py
+++ b/geomagio/api/ws/filter.py
@@ -39,7 +39,9 @@ def get_filter_data_query(
         description="`--` dynamically determines a necessary sampling period.",
     ),
     sampling_period: Union[SamplingPeriod, float] = Query(
-        SamplingPeriod.SECOND, alias="output_sampling_period", title="Output sampling period"
+        SamplingPeriod.SECOND,
+        alias="output_sampling_period",
+        title="Output sampling period",
     ),
     data_host: Union[DataHost, str] = Query(
         DataHost.DEFAULT, title="Data Host", description="Edge host to pull data from."