diff --git a/headers/private/kernel/ksignal.h b/headers/private/kernel/ksignal.h
index b695c2ecf9..2182c9dddf 100644
--- a/headers/private/kernel/ksignal.h
+++ b/headers/private/kernel/ksignal.h
@@ -1,7 +1,7 @@
-/* 
-** Copyright 2003-2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
-** Distributed under the terms of the Haiku License.
-*/
+/*
+ * Copyright 2003-2005, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
 #ifndef _KERNEL_SIGNAL_H
 #define _KERNEL_SIGNAL_H
 
@@ -9,6 +9,7 @@
 #include <KernelExport.h>
 #include <signal.h>
 
+
 #define KILL_SIGNALS	((1L << (SIGKILL - 1)) | (1L << (SIGKILLTHR - 1)))
 #define BLOCKABLE_SIGS	(~(KILL_SIGNALS | (1L << (SIGSTOP - 1))))
 
@@ -18,7 +19,7 @@ extern "C" {
 #endif
 
 extern int handle_signals(struct thread *t, cpu_status *state);
-extern bool is_kill_signal_pending();
+extern bool is_kill_signal_pending(void);
 
 extern int _user_send_signal(pid_t tid, uint sig);
 extern int _user_sigprocmask(int how, const sigset_t *set, sigset_t *oldSet);
@@ -29,5 +30,4 @@ extern bigtime_t _user_set_alarm(bigtime_t time, uint32 mode);
 }	// extern "C"
 #endif
 
-
 #endif	/* _KERNEL_SIGNAL_H */
diff --git a/headers/private/kernel/thread.h b/headers/private/kernel/thread.h
index 792e9c1885..c1380c911d 100755
--- a/headers/private/kernel/thread.h
+++ b/headers/private/kernel/thread.h
@@ -55,8 +55,8 @@ thread_get_current_thread_id(void)
 	return t ? t->id : 0;
 }
 
-thread_id allocate_thread_id();
-thread_id peek_next_thread_id();
+thread_id allocate_thread_id(void);
+thread_id peek_next_thread_id(void);
 
 thread_id spawn_kernel_thread_etc(thread_func, const char *name, int32 priority,
 	void *args, team_id team, thread_id threadID);