diff --git a/geomagio/Controller.py b/geomagio/Controller.py
index 1b9ce45c0d6d690c6cdcc2dc5a0c7d8fa2cbdab2..9d21f228dd546f1d1b9e64cfcf7c99199e53733c 100644
--- a/geomagio/Controller.py
+++ b/geomagio/Controller.py
@@ -159,6 +159,7 @@ class Controller(object):
                     timeseries=timeseries,
                     renames=options.rename_input_channel)
         processed = algorithm.process(timeseries)
+        processed.trim(starttime=options.starttime, endtime=options.endtime)
         if options.rename_output_channel:
             processed = self._rename_channels(
                     timeseries=processed,