diff --git a/geomagio/Controller.py b/geomagio/Controller.py
index ebb77c5167c4e120405778b16a552ce67825fd1a..8d9b42fd733646b52da2f3743bf96710a53d232d 100644
--- a/geomagio/Controller.py
+++ b/geomagio/Controller.py
@@ -453,6 +453,10 @@ def parse_args(args):
             action='store_true',
             default=False,
             help='Used to update data')
+    parser.add_argument('--no-trim',
+            action='store_true',
+            default=False,
+            help='Ensures output data will not be trimmed down'),
     parser.add_argument('--input-edge-port',
             type=int,
             default=2060,