diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c
index 291236e..cbb38c5 100644
--- a/drivers/scsi/sr_ioctl.c
+++ b/drivers/scsi/sr_ioctl.c
@@ -7,6 +7,7 @@
 #include <linux/blkpg.h>
 #include <linux/cdrom.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 #include <asm/io.h>
 #include <asm/uaccess.h>