diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
index 19eca14b49a0..ca866f1cca2e 100644
--- a/arch/x86/boot/boot.h
+++ b/arch/x86/boot/boot.h
@@ -28,8 +28,6 @@
 #include "cpuflags.h"
 
 /* Useful macros */
-#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
-
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
 
 extern struct setup_header hdr;
diff --git a/arch/x86/boot/main.c b/arch/x86/boot/main.c
index 996df3d586f0..e3add857c2c9 100644
--- a/arch/x86/boot/main.c
+++ b/arch/x86/boot/main.c
@@ -10,6 +10,7 @@
 /*
  * Main module for the real-mode kernel code
  */
+#include <linux/build_bug.h>
 
 #include "boot.h"
 #include "string.h"