diff --git a/hw/rtc/twl92230.c b/hw/rtc/twl92230.c
index a787bd247d..006d75e174 100644
--- a/hw/rtc/twl92230.c
+++ b/hw/rtc/twl92230.c
@@ -697,6 +697,7 @@ static void menelaus_write(void *opaque, uint8_t addr, uint8_t value)
 #ifdef VERBOSE
         printf("%s: unknown register %02x\n", __func__, addr);
 #endif
+        break;
     }
 }