diff --git a/drivers/vfio/iova_bitmap.c b/drivers/vfio/iova_bitmap.c
index 6631e8befe1b2..56816ba1be9b1 100644
--- a/drivers/vfio/iova_bitmap.c
+++ b/drivers/vfio/iova_bitmap.c
@@ -5,6 +5,7 @@
  */
 #include <linux/iova_bitmap.h>
 #include <linux/mm.h>
+#include <linux/slab.h>
 #include <linux/highmem.h>
 
 #define BITS_PER_PAGE (PAGE_SIZE * BITS_PER_BYTE)