diff --git a/drivers/demo/demo-simple.c b/drivers/demo/demo-simple.c
index 2bcb7df..f069748 100644
--- a/drivers/demo/demo-simple.c
+++ b/drivers/demo/demo-simple.c
@@ -10,6 +10,7 @@
 #include <common.h>
 #include <dm.h>
 #include <dm-demo.h>
+#include <mapmem.h>
 #include <asm/io.h>
 
 static int simple_hello(struct udevice *dev, int ch)