diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index 78b151c..5c3142b 100644
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -110,8 +110,8 @@
 #define hpet_set_rtc_irq_bit(arg)		0
 #define hpet_rtc_timer_init()			do { } while (0)
 #define hpet_rtc_dropped_irq()			0
-#define hpet_register_irq_handler(h)		0
-#define hpet_unregister_irq_handler(h)		0
+#define hpet_register_irq_handler(h)		({ 0; })
+#define hpet_unregister_irq_handler(h)		({ 0; })
 #ifdef RTC_IRQ
 static irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id)
 {