diff --git a/workflow/scripts/convert_reads.py b/workflow/scripts/convert_reads.py
index dc3756a5315376d97382b4c4679bcdf7b25bc765..e0630e5942ee4f801a10d2db3cad7d09f8b5219a 100644
--- a/workflow/scripts/convert_reads.py
+++ b/workflow/scripts/convert_reads.py
@@ -42,12 +42,12 @@ def get_args():
 
     parser.add_argument('-m', '--chrm',
                         help="True/False if to remove ChrM.",
-                        default=True,
+                        default=False,
                         action='store_true')
 
     parser.add_argument('-t', '--tn5',
-                    help='Enable TN5 shifting for ATAC-Seq.'
-                    default=True,
+                    help='Enable TN5 shifting for ATAC-Seq.',
+                    default=False,
                     action='store_true')
 
     args = parser.parse_args()