diff --git a/sort_certificate.py b/sort_certificate.py
index 7d210cc..8ad4de3 100755
--- a/sort_certificate.py
+++ b/sort_certificate.py
@@ -250,12 +250,11 @@ def handle_args():
                         action='store_true',
                         help='Show only error logging')
 
-    loggrp.add_argument('-c', '--check',
-                        action='store_true',
-                        help='Only check, output nothing')
-
     outputgrp = parser.add_mutually_exclusive_group()
 
+    outputgrp.add_argument('-c', '--check',
+                           action='store_true',
+                           help='Only check, output nothing')
     outputgrp.add_argument('--just-certificate',
                            dest='print_cert',
                            action='store_true',