1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/rtc/rtc-isl12057.c b/drivers/rtc/rtc-isl12057.c
index 455b601d731d..8c3f60737df8 100644
--- a/drivers/rtc/rtc-isl12057.c
+++ b/drivers/rtc/rtc-isl12057.c
@@ -88,7 +88,7 @@ static void isl12057_rtc_regs_to_tm(struct rtc_time *tm, u8 *regs)
         tm->tm_min = bcd2bin(regs[ISL12057_REG_RTC_MN]);
 
         if (regs[ISL12057_REG_RTC_HR] & ISL12057_REG_RTC_HR_MIL) { /* AM/PM */
-                tm->tm_hour = bcd2bin(regs[ISL12057_REG_RTC_HR] & 0x0f);
+                tm->tm_hour = bcd2bin(regs[ISL12057_REG_RTC_HR] & 0x1f);
                 if (regs[ISL12057_REG_RTC_HR] & ISL12057_REG_RTC_HR_PM)
                         tm->tm_hour += 12;
         } else {                                            /* 24 hour mode */
@@ -97,7 +97,7 @@ static void isl12057_rtc_regs_to_tm(struct rtc_time *tm, u8 *regs)
 
         tm->tm_mday = bcd2bin(regs[ISL12057_REG_RTC_DT]);
         tm->tm_wday = bcd2bin(regs[ISL12057_REG_RTC_DW]) - 1; /* starts at 1 */
-        tm->tm_mon  = bcd2bin(regs[ISL12057_REG_RTC_MO]) - 1; /* starts at 1 */
+        tm->tm_mon  = bcd2bin(regs[ISL12057_REG_RTC_MO] & 0x1f) - 1; /* ditto */
         tm->tm_year = bcd2bin(regs[ISL12057_REG_RTC_YR]) + 100;
 }