1 files changed, 1 insertions, 1 deletions

diff --git a/firmware/drivers/rtc/rtc_ds1339_ds3231.c b/firmware/drivers/rtc/rtc_ds1339_ds3231.c
index 3788dc75c0..01624e048b 100644
--- a/firmware/drivers/rtc/rtc_ds1339_ds3231.c
+++ b/firmware/drivers/rtc/rtc_ds1339_ds3231.c
@@ -126,7 +126,7 @@ int rtc_read_datetime(struct tm *tm)
     tm->tm_sec  = BCD2DEC(buf[0] & 0x7f);
     tm->tm_min  = BCD2DEC(buf[1] & 0x7f);
     tm->tm_hour = BCD2DEC(buf[2] & 0x3f);
-    tm->tm_wday = BCD2DEC(buf[3] & 0x3) - 1; /* timefuncs wants 0..6 for wday */
+    tm->tm_wday = BCD2DEC(buf[3] & 0x7) - 1; /* timefuncs wants 0..6 for wday */
     tm->tm_mday = BCD2DEC(buf[4] & 0x3f);
     tm->tm_mon  = BCD2DEC(buf[5] & 0x1f) - 1;
     tm->tm_year = BCD2DEC(buf[6]) + 100;