diff --git a/drivers/input/misc/wistron_btns.c b/drivers/input/misc/wistron_btns.c
index 38da6ab043846a8b8874e51bdca70ec95885f5d6..c0afb71a3a6d7a34919a8a32f98731a3b28e8001 100644
--- a/drivers/input/misc/wistron_btns.c
+++ b/drivers/input/misc/wistron_btns.c
@@ -1328,7 +1328,7 @@ static struct platform_driver wistron_driver = {
 	.driver		= {
 		.name	= "wistron-bios",
 		.owner	= THIS_MODULE,
-#if CONFIG_PM
+#ifdef CONFIG_PM
 		.pm	= &wistron_pm_ops,
 #endif
 	},