diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c
index b8eee4c7888b..e56c2adf57a4 100644
--- a/arch/x86_64/kernel/e820.c
+++ b/arch/x86_64/kernel/e820.c
@@ -17,6 +17,7 @@
 #include <linux/kexec.h>
 #include <linux/module.h>
 
+#include <asm/pgtable.h>
 #include <asm/page.h>
 #include <asm/e820.h>
 #include <asm/proto.h>