diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 2a9a877a0508..d98701ee36c6 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -1014,8 +1014,6 @@ SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
 	return do_sys_settimeofday64(tv ? &kts : NULL, tz ? &ktz : NULL);
 }
 
-asmlinkage long sys_ni_posix_timers(void);
-
 SYSCALL_DEFINE2(osf_utimes, const char __user *, filename,
 		struct timeval32 __user *, tvs)
 {
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 33a0ee3bcb2e..24871f8ec8bb 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -1280,6 +1280,7 @@ asmlinkage long sys_ni_syscall(void);
 
 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
 
+asmlinkage long sys_ni_posix_timers(void);
 
 /*
  * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c
index 828aeecbd1e8..39769b2d1005 100644
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -16,6 +16,7 @@
 #include <linux/posix-timers.h>
 #include <linux/time_namespace.h>
 #include <linux/compat.h>
+#include <linux/syscalls.h>
 
 #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
 /* Architectures may override SYS_NI and COMPAT_SYS_NI */