diff --git a/kernel/chips/w83627hf.c b/kernel/chips/w83627hf.c
index 431388cc..14e6f351 100644
--- a/kernel/chips/w83627hf.c
+++ b/kernel/chips/w83627hf.c
@@ -177,7 +177,6 @@ superio_exit(void)
 #define W83781D_REG_ALARM2 0x45A
 #define W83781D_REG_ALARM3 0x45B
 
-#define W83781D_REG_IRQ 0x4C
 #define W83781D_REG_BEEP_CONFIG 0x4D
 #define W83781D_REG_BEEP_INTS1 0x56
 #define W83781D_REG_BEEP_INTS2 0x57