diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index f88d90f..28df18d 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -59,6 +59,7 @@
 	va_start(ap, fmt);
 	if (conf_message_callback)
 		conf_message_callback(fmt, ap);
+	va_end(ap);
 }
 
 const char *conf_get_configname(void)