diff --git a/board/liebherr/mccmon6/mccmon6.c b/board/liebherr/mccmon6/mccmon6.c
index 6a5fbbb..c7af73f 100644
--- a/board/liebherr/mccmon6/mccmon6.c
+++ b/board/liebherr/mccmon6/mccmon6.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <env.h>
+#include <serial.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/imx-regs.h>