diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 3f370228bf310a223eaee279c4839a5c9602410f..f7247778c225f30447999ea44fcb24951298780b 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -204,6 +204,7 @@ cache_type_store(struct device *dev, struct device_attribute *attr,
 	buffer_data[2] &= ~0x05;
 	buffer_data[2] |= wce << 2 | rcd;
 	sp = buffer_data[0] & 0x80 ? 1 : 0;
+	buffer_data[0] &= ~0x80;
 
 	if (scsi_mode_select(sdp, 1, sp, 8, buffer_data, len, SD_TIMEOUT,
 			     SD_MAX_RETRIES, &data, &sshdr)) {