diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c
index 5d02ff4db6cc1e050d94ee83fa24899d9dc9050a..b65462f764849bce89b7c7213a4881a1e4abb40c 100644
--- a/drivers/scsi/sr_ioctl.c
+++ b/drivers/scsi/sr_ioctl.c
@@ -192,7 +192,7 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
 	SDev = cd->device;
 
 	if (!sense) {
-		sense = kmalloc(sizeof(*sense), GFP_KERNEL);
+		sense = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
 		if (!sense) {
 			err = -ENOMEM;
 			goto out;