diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index f67d1a1..3ea1a71 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -27,6 +27,7 @@
 #include <linux/mm.h>
 #include <linux/init.h>
 #include <linux/string.h>
+#include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/mtio.h>
 #include <linux/cdrom.h>