diff --git a/plat/mediatek/mt8173/drivers/rtc/rtc.c b/plat/mediatek/mt8173/drivers/rtc/rtc.c
index e171863..daaac42 100644
--- a/plat/mediatek/mt8173/drivers/rtc/rtc.c
+++ b/plat/mediatek/mt8173/drivers/rtc/rtc.c
@@ -95,8 +95,8 @@
 	if (Writeif_unlock()) {
 		RTC_Write(RTC_BBPU, bbpu);
 		if (!Write_trigger())
-			assert(1);
+			assert(0);
 	} else {
-		assert(1);
+		assert(0);
 	}
 }