diff --git a/include/asm-x86/Kbuild b/include/asm-x86/Kbuild
index 5e3539c129b9..435074af1987 100644
--- a/include/asm-x86/Kbuild
+++ b/include/asm-x86/Kbuild
@@ -11,8 +11,6 @@ header-y += sigcontext32.h
 header-y += ucontext.h
 header-y += vsyscall32.h
 
-unifdef-y += a.out_32.h
-unifdef-y += a.out_64.h
 unifdef-y += byteorder_32.h
 unifdef-y += byteorder_64.h
 unifdef-y += e820.h
diff --git a/include/asm-x86/a.out.h b/include/asm-x86/a.out.h
index 5bc9b1d3b227..a62443e38eb8 100644
--- a/include/asm-x86/a.out.h
+++ b/include/asm-x86/a.out.h
@@ -1,13 +1,30 @@
+#ifndef _ASM_X86_A_OUT_H
+#define _ASM_X86_A_OUT_H
+
+struct exec
+{
+	unsigned int a_info;	/* Use macros N_MAGIC, etc for access */
+	unsigned a_text;	/* length of text, in bytes */
+	unsigned a_data;	/* length of data, in bytes */
+	unsigned a_bss;		/* length of uninitialized data area for file, in bytes */
+	unsigned a_syms;	/* length of symbol table data in file, in bytes */
+	unsigned a_entry;	/* start address */
+	unsigned a_trsize;	/* length of relocation info for text, in bytes */
+	unsigned a_drsize;	/* length of relocation info for data, in bytes */
+};
+
+#define N_TRSIZE(a)	((a).a_trsize)
+#define N_DRSIZE(a)	((a).a_drsize)
+#define N_SYMSIZE(a)	((a).a_syms)
+
 #ifdef __KERNEL__
+# include <linux/thread_info.h>
+# define STACK_TOP	TASK_SIZE
 # ifdef CONFIG_X86_32
-#  include "a.out_32.h"
+#  define STACK_TOP_MAX	STACK_TOP
 # else
-#  include "a.out_64.h"
-# endif
-#else
-# ifdef __i386__
-#  include "a.out_32.h"
-# else
-#  include "a.out_64.h"
+#  define STACK_TOP_MAX	TASK_SIZE64
 # endif
 #endif
+
+#endif /* _ASM_X86_A_OUT_H */
diff --git a/include/asm-x86/a.out_32.h b/include/asm-x86/a.out_32.h
deleted file mode 100644
index 851a60f8258c..000000000000
--- a/include/asm-x86/a.out_32.h
+++ /dev/null
@@ -1,27 +0,0 @@
-#ifndef __I386_A_OUT_H__
-#define __I386_A_OUT_H__
-
-struct exec
-{
-  unsigned long a_info;		/* Use macros N_MAGIC, etc for access */
-  unsigned a_text;		/* length of text, in bytes */
-  unsigned a_data;		/* length of data, in bytes */
-  unsigned a_bss;		/* length of uninitialized data area for file, in bytes */
-  unsigned a_syms;		/* length of symbol table data in file, in bytes */
-  unsigned a_entry;		/* start address */
-  unsigned a_trsize;		/* length of relocation info for text, in bytes */
-  unsigned a_drsize;		/* length of relocation info for data, in bytes */
-};
-
-#define N_TRSIZE(a)	((a).a_trsize)
-#define N_DRSIZE(a)	((a).a_drsize)
-#define N_SYMSIZE(a)	((a).a_syms)
-
-#ifdef __KERNEL__
-
-#define STACK_TOP	TASK_SIZE
-#define STACK_TOP_MAX	STACK_TOP
-
-#endif
-
-#endif /* __A_OUT_GNU_H__ */
diff --git a/include/asm-x86/a.out_64.h b/include/asm-x86/a.out_64.h
deleted file mode 100644
index e789300e41a5..000000000000
--- a/include/asm-x86/a.out_64.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#ifndef __X8664_A_OUT_H__
-#define __X8664_A_OUT_H__
-
-/* 32bit a.out */
-
-struct exec
-{
-  unsigned int a_info;		/* Use macros N_MAGIC, etc for access */
-  unsigned a_text;		/* length of text, in bytes */
-  unsigned a_data;		/* length of data, in bytes */
-  unsigned a_bss;		/* length of uninitialized data area for file, in bytes */
-  unsigned a_syms;		/* length of symbol table data in file, in bytes */
-  unsigned a_entry;		/* start address */
-  unsigned a_trsize;		/* length of relocation info for text, in bytes */
-  unsigned a_drsize;		/* length of relocation info for data, in bytes */
-};
-
-#define N_TRSIZE(a)	((a).a_trsize)
-#define N_DRSIZE(a)	((a).a_drsize)
-#define N_SYMSIZE(a)	((a).a_syms)
-
-#ifdef __KERNEL__
-#include <linux/thread_info.h>
-#define STACK_TOP	TASK_SIZE
-#define STACK_TOP_MAX	TASK_SIZE64
-#endif
-
-#endif /* __A_OUT_GNU_H__ */