diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index c4ba85c8cb00..b17dca7249f8 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -29,6 +29,8 @@
 
 #include <asm/tlbflush.h>
 
+#include "internal.h"
+
 /* add this memory to iomem resource */
 static struct resource *register_memory_resource(u64 start, u64 size)
 {