diff --git a/imap_processing/mag/l1a/mag_l1a.py b/imap_processing/mag/l1a/mag_l1a.py
index c72d0fc83..f90e9b049 100644
--- a/imap_processing/mag/l1a/mag_l1a.py
+++ b/imap_processing/mag/l1a/mag_l1a.py
@@ -192,7 +192,7 @@ def process_packets(
             # this is because mypy expects both to have the attributes
             primary_packet_data.total_vectors,
             secondary_packet_data.total_vectors,
-            mag_l0.COMPRESSION
+            mag_l0.COMPRESSION,
         )
 
         primary_timestamped_vectors = MagL1a.calculate_vector_time(