diff --git a/sys/ddb/db_command.c b/sys/ddb/db_command.c
index 03fd66294af7..b1ad9e50640a 100644
--- a/sys/ddb/db_command.c
+++ b/sys/ddb/db_command.c
@@ -411,8 +411,8 @@ static struct command db_command_table[] = {
 	{ "until",	db_trace_until_call_cmd,0,	0 },
 	{ "next",	db_trace_until_matching_cmd,0,	0 },
 	{ "match",	db_trace_until_matching_cmd,0,	0 },
-	{ "trace",	db_stack_trace,		0,	0 },
-	{ "where",	db_stack_trace,		0,	0 },
+	{ "trace",	db_stack_trace,		CS_OWN,	0 },
+	{ "where",	db_stack_trace,		CS_OWN,	0 },
 	{ "call",	db_fncall,		CS_OWN,	0 },
 	{ "show",	0,			0,	db_show_cmds },
 	{ "ps",		db_ps,			0,	0 },