diff --git a/daemon/debug.c b/daemon/debug.c
index 13b7240ff..5b3b5faa1 100644
--- a/daemon/debug.c
+++ b/daemon/debug.c
@@ -61,7 +61,7 @@ static struct cmd cmds[] = {
 #endif
 
 char *
-do_debug (char *subcmd, char **argv)
+do_debug (char *subcmd ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 #if ENABLE_DEBUG_COMMAND
   int argc, i;