diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index b9eb0b605b0b012a5055f7dff83fd6c57f4f790b..1bf1d37aa2e36b1a38702ce63ad191e6fe49cdca 100644
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -27,6 +27,7 @@
 #include <linux/uio_driver.h>
 #include <linux/stringify.h>
 #include <linux/bitops.h>
+#include <linux/highmem.h>
 #include <net/genetlink.h>
 #include <scsi/scsi_common.h>
 #include <scsi/scsi_proto.h>