diff --git a/headers/private/kernel/sem.h b/headers/private/kernel/sem.h
index 77c883dba9..ac0a7eea9d 100755
--- a/headers/private/kernel/sem.h
+++ b/headers/private/kernel/sem.h
@@ -1,10 +1,14 @@
 /*
-** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
-** Distributed under the terms of the NewOS License.
-*/
+ * Copyright 2002-2004, Axel Dörfler, axeld@pinc-software.de.
+ * Distributed under the terms of the MIT License.
+ *
+ * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
+ * Distributed under the terms of the NewOS License.
+ */
 #ifndef KERNEL_SEM_H
 #define KERNEL_SEM_H
 
+
 #include <OS.h>
 #include <thread.h>
 
@@ -12,6 +16,18 @@
 struct kernel_args;
 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern status_t sem_init(struct kernel_args *args);
+extern int sem_delete_owned_sems(team_id owner);
+extern status_t	sem_interrupt_thread(struct thread *t);
+extern int32 sem_used_sems(void);
+extern int32 sem_max_sems(void);
+
+extern sem_id create_sem_etc(int32 count, const char *name, team_id owner);
+
 /* user calls */
 sem_id _user_create_sem(int32 count, const char *name);
 status_t _user_delete_sem(sem_id id);
@@ -24,12 +40,8 @@ status_t _user_get_sem_info(sem_id, struct sem_info *, size_t);
 status_t _user_get_next_sem_info(team_id, int32 *, struct sem_info *, size_t);
 status_t _user_set_sem_owner(sem_id id, team_id team);
 
-/* kernel calls */
-extern sem_id	create_sem_etc(int32 count, const char *name, team_id owner);
-extern status_t	sem_init(struct kernel_args *ka);
-extern int		sem_delete_owned_sems(team_id owner);
-extern status_t	sem_interrupt_thread(struct thread *t);
-extern int32	sem_used_sems(void);
-extern int32	sem_max_sems(void);
+#ifdef __cplusplus
+}
+#endif
 
 #endif	/* KERNEL_SEM_H */