diff --git a/arch/arm/mach-keystone/mon.c b/arch/arm/mach-keystone/mon.c
index cc2ec88..b7de9ba 100644
--- a/arch/arm/mach-keystone/mon.c
+++ b/arch/arm/mach-keystone/mon.c
@@ -5,6 +5,7 @@
  * Copyright (C) 2012-2019 Texas Instruments Incorporated - http://www.ti.com/
  */
 
+#include <hang.h>
 #include <asm/unaligned.h>
 #include <common.h>
 #include <command.h>