diff --git a/drivers/staging/exfat/exfat.h b/drivers/staging/exfat/exfat.h
index 95e27aed350d..4211148405c5 100644
--- a/drivers/staging/exfat/exfat.h
+++ b/drivers/staging/exfat/exfat.h
@@ -224,7 +224,7 @@ static inline u16 get_row_index(u16 i)
 struct date_time_t {
 	u16      year;
 	u16      month;
-	u16      Day;
+	u16      day;
 	u16      Hour;
 	u16      Minute;
 	u16      Second;
diff --git a/drivers/staging/exfat/exfat_super.c b/drivers/staging/exfat/exfat_super.c
index 293d103a6b54..b30f9517cfef 100644
--- a/drivers/staging/exfat/exfat_super.c
+++ b/drivers/staging/exfat/exfat_super.c
@@ -59,7 +59,7 @@ static void exfat_write_super(struct super_block *sb);
 /* Convert a FAT time/date pair to a UNIX date (seconds since 1 1 70). */
 static void exfat_time_fat2unix(struct timespec64 *ts, struct date_time_t *tp)
 {
-	ts->tv_sec = mktime64(tp->year + 1980, tp->month + 1, tp->Day,
+	ts->tv_sec = mktime64(tp->year + 1980, tp->month + 1, tp->day,
 			      tp->Hour, tp->Minute, tp->Second);
 
 	ts->tv_nsec = tp->MilliSecond * NSEC_PER_MSEC;
@@ -78,7 +78,7 @@ static void exfat_time_unix2fat(struct timespec64 *ts, struct date_time_t *tp)
 		tp->Second	= 0;
 		tp->Minute	= 0;
 		tp->Hour	= 0;
-		tp->Day		= 1;
+		tp->day		= 1;
 		tp->month	= 1;
 		tp->year	= 0;
 		return;
@@ -89,7 +89,7 @@ static void exfat_time_unix2fat(struct timespec64 *ts, struct date_time_t *tp)
 		tp->Second	= 59;
 		tp->Minute	= 59;
 		tp->Hour	= 23;
-		tp->Day		= 31;
+		tp->day		= 31;
 		tp->month	= 12;
 		tp->year	= 127;
 		return;
@@ -99,7 +99,7 @@ static void exfat_time_unix2fat(struct timespec64 *ts, struct date_time_t *tp)
 	tp->Second	= tm.tm_sec;
 	tp->Minute	= tm.tm_min;
 	tp->Hour	= tm.tm_hour;
-	tp->Day		= tm.tm_mday;
+	tp->day		= tm.tm_mday;
 	tp->month	= tm.tm_mon + 1;
 	tp->year	= tm.tm_year + 1900 - 1980;
 }
@@ -1507,7 +1507,7 @@ static int ffsReadStat(struct inode *inode, struct dir_entry_t *info)
 	p_fs->fs_func->get_entry_time(ep, &tm, TM_CREATE);
 	info->CreateTimestamp.year = tm.year;
 	info->CreateTimestamp.month = tm.mon;
-	info->CreateTimestamp.Day = tm.day;
+	info->CreateTimestamp.day = tm.day;
 	info->CreateTimestamp.Hour = tm.hour;
 	info->CreateTimestamp.Minute = tm.min;
 	info->CreateTimestamp.Second = tm.sec;
@@ -1516,7 +1516,7 @@ static int ffsReadStat(struct inode *inode, struct dir_entry_t *info)
 	p_fs->fs_func->get_entry_time(ep, &tm, TM_MODIFY);
 	info->ModifyTimestamp.year = tm.year;
 	info->ModifyTimestamp.month = tm.mon;
-	info->ModifyTimestamp.Day = tm.day;
+	info->ModifyTimestamp.day = tm.day;
 	info->ModifyTimestamp.Hour = tm.hour;
 	info->ModifyTimestamp.Minute = tm.min;
 	info->ModifyTimestamp.Second = tm.sec;
@@ -1608,7 +1608,7 @@ static int ffsWriteStat(struct inode *inode, struct dir_entry_t *info)
 	tm.sec  = info->CreateTimestamp.Second;
 	tm.min  = info->CreateTimestamp.Minute;
 	tm.hour = info->CreateTimestamp.Hour;
-	tm.day  = info->CreateTimestamp.Day;
+	tm.day  = info->CreateTimestamp.day;
 	tm.mon  = info->CreateTimestamp.month;
 	tm.year = info->CreateTimestamp.year;
 	p_fs->fs_func->set_entry_time(ep, &tm, TM_CREATE);
@@ -1616,7 +1616,7 @@ static int ffsWriteStat(struct inode *inode, struct dir_entry_t *info)
 	tm.sec  = info->ModifyTimestamp.Second;
 	tm.min  = info->ModifyTimestamp.Minute;
 	tm.hour = info->ModifyTimestamp.Hour;
-	tm.day  = info->ModifyTimestamp.Day;
+	tm.day  = info->ModifyTimestamp.day;
 	tm.mon  = info->ModifyTimestamp.month;
 	tm.year = info->ModifyTimestamp.year;
 	p_fs->fs_func->set_entry_time(ep, &tm, TM_MODIFY);
@@ -1927,7 +1927,7 @@ static int ffsReadDir(struct inode *inode, struct dir_entry_t *dir_entry)
 			fs_func->get_entry_time(ep, &tm, TM_CREATE);
 			dir_entry->CreateTimestamp.year = tm.year;
 			dir_entry->CreateTimestamp.month = tm.mon;
-			dir_entry->CreateTimestamp.Day = tm.day;
+			dir_entry->CreateTimestamp.day = tm.day;
 			dir_entry->CreateTimestamp.Hour = tm.hour;
 			dir_entry->CreateTimestamp.Minute = tm.min;
 			dir_entry->CreateTimestamp.Second = tm.sec;
@@ -1936,7 +1936,7 @@ static int ffsReadDir(struct inode *inode, struct dir_entry_t *dir_entry)
 			fs_func->get_entry_time(ep, &tm, TM_MODIFY);
 			dir_entry->ModifyTimestamp.year = tm.year;
 			dir_entry->ModifyTimestamp.month = tm.mon;
-			dir_entry->ModifyTimestamp.Day = tm.day;
+			dir_entry->ModifyTimestamp.day = tm.day;
 			dir_entry->ModifyTimestamp.Hour = tm.hour;
 			dir_entry->ModifyTimestamp.Minute = tm.min;
 			dir_entry->ModifyTimestamp.Second = tm.sec;
