diff --git a/bsp/stm32/libraries/HAL_Drivers/drv_rtc.c b/bsp/stm32/libraries/HAL_Drivers/drv_rtc.c
index 16ec84b0da..149e16871b 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drv_rtc.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_rtc.c
@@ -65,21 +65,21 @@ static rt_err_t set_rtc_time_stamp(time_t time_stamp)
 {
     RTC_TimeTypeDef RTC_TimeStruct = {0};
     RTC_DateTypeDef RTC_DateStruct = {0};
-    struct tm p_tm = {0};
+    struct tm tm = {0};
 
-    gmtime_r(&time_stamp, &p_tm);
-    if (p_tm.tm_year < 100)
+    gmtime_r(&time_stamp, &tm);
+    if (tm.tm_year < 100)
     {
         return -RT_ERROR;
     }
 
-    RTC_TimeStruct.Seconds = p_tm.tm_sec ;
-    RTC_TimeStruct.Minutes = p_tm.tm_min ;
-    RTC_TimeStruct.Hours   = p_tm.tm_hour;
-    RTC_DateStruct.Date    = p_tm.tm_mday;
-    RTC_DateStruct.Month   = p_tm.tm_mon + 1 ;
-    RTC_DateStruct.Year    = p_tm.tm_year - 100;
-    RTC_DateStruct.WeekDay = p_tm.tm_wday + 1;
+    RTC_TimeStruct.Seconds = tm.tm_sec ;
+    RTC_TimeStruct.Minutes = tm.tm_min ;
+    RTC_TimeStruct.Hours   = tm.tm_hour;
+    RTC_DateStruct.Date    = tm.tm_mday;
+    RTC_DateStruct.Month   = tm.tm_mon + 1 ;
+    RTC_DateStruct.Year    = tm.tm_year - 100;
+    RTC_DateStruct.WeekDay = tm.tm_wday + 1;
 
     if (HAL_RTC_SetTime(&RTC_Handler, &RTC_TimeStruct, RTC_FORMAT_BIN) != HAL_OK)
     {