diff --git a/aqhome/msg/node/m_time.c b/aqhome/msg/node/m_time.c
index 662aa70..378c746 100644
--- a/aqhome/msg/node/m_time.c
+++ b/aqhome/msg/node/m_time.c
@@ -54,7 +54,7 @@ AQH_MESSAGE *AQH_TimeMessage_new(uint8_t destAddr, uint8_t srcAddr, uint8_t code
 
   *(ptr++)=GWEN_Timestamp_GetMonth(ts) & 0xff;   /* month */
   *(ptr++)=GWEN_Timestamp_GetDay(ts) & 0xff;     /* day of month */
-  *(ptr++)=GWEN_Timestamp_GetWeekDay(ts) & 0xff; /* day of week */
+  *(ptr++)=((GWEN_Timestamp_GetWeekDay(ts)+1) & 0xff); /* day of week */
   *(ptr++)=GWEN_Timestamp_GetHour(ts) & 0xff;    /* hour */
   *(ptr++)=GWEN_Timestamp_GetMinute(ts) & 0xff;  /* minute */
   *(ptr++)=GWEN_Timestamp_GetSecond(ts) & 0xff;  /* second */