diff --git a/mxqsub.c b/mxqsub.c
index 621e9bc..8974d24 100644
--- a/mxqsub.c
+++ b/mxqsub.c
@@ -89,8 +89,9 @@ static void print_usage(void)
     "  amount of resources and having the same priority\n"
     "  are grouped and executed in parallel.\n"
     "\n"
-    "  -n, --new-group   create new group if group has no running or queued jobs\n"
-    "                    (default: reuse group based on automatic grouping)\n"
+    "  -g, --group-id=ID  Add job to group with group_id ID"
+    "  -n, --new-group    Add job to a new group if it does not match any running or waiting group\n"
+    "                     (default: Add job to a group based on automatic grouping)\n"
     "\n"
     "  -a, --command-alias=NAME       set command alias  (default: <command>)\n"
     "  -N, --group-name=NAME          set group name     (default: 'default')\n"