diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c
index e299ee5a753d..49057d8bc668 100644
--- a/arch/um/sys-i386/ldt.c
+++ b/arch/um/sys-i386/ldt.c
@@ -3,7 +3,6 @@
  * Licensed under the GPL
  */
 
-#include "linux/stddef.h"
 #include "linux/sched.h"
 #include "linux/slab.h"
 #include "linux/types.h"
diff --git a/arch/um/sys-i386/ptrace_user.c b/arch/um/sys-i386/ptrace_user.c
index 5f3cc6685820..01212c88fcc4 100644
--- a/arch/um/sys-i386/ptrace_user.c
+++ b/arch/um/sys-i386/ptrace_user.c
@@ -4,9 +4,9 @@
  */
 
 #include <stdio.h>
+#include <stddef.h>
 #include <errno.h>
 #include <unistd.h>
-#include <linux/stddef.h>
 #include "ptrace_user.h"
 /* Grr, asm/user.h includes asm/ptrace.h, so has to follow ptrace_user.h */
 #include <asm/user.h>
diff --git a/arch/um/sys-i386/user-offsets.c b/arch/um/sys-i386/user-offsets.c
index 6f4ef2b7fa4a..447306b20aea 100644
--- a/arch/um/sys-i386/user-offsets.c
+++ b/arch/um/sys-i386/user-offsets.c
@@ -2,7 +2,7 @@
 #include <signal.h>
 #include <asm/ptrace.h>
 #include <asm/user.h>
-#include <linux/stddef.h>
+#include <stddef.h>
 #include <sys/poll.h>
 
 #define DEFINE(sym, val) \