diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c
index c02db01f7..7fef305 100644
--- a/drivers/char/bsr.c
+++ b/drivers/char/bsr.c
@@ -27,6 +27,7 @@
 #include <linux/cdev.h>
 #include <linux/list.h>
 #include <linux/mm.h>
+#include <linux/slab.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>