diff --git a/headers/posix/unistd.h b/headers/posix/unistd.h
index 8aea936ee5..827de17441 100644
--- a/headers/posix/unistd.h
+++ b/headers/posix/unistd.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2004-2006, Haiku Inc. All Rights Reserved.
+ * Copyright 2004-2007, Haiku Inc. All Rights Reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _UNISTD_H_
@@ -145,7 +145,7 @@ extern pid_t	getpgid(pid_t pid);
 
 extern pid_t	setsid(void);
 extern int		setpgid(pid_t pid, pid_t pgid);
-extern int		setpgrp(void);
+extern pid_t	setpgrp(void);
 
 /* access permissions */				
 extern gid_t	getegid(void);
diff --git a/src/system/libroot/posix/unistd/process.c b/src/system/libroot/posix/unistd/process.c
index b68e5e7c83..c119be38c4 100644
--- a/src/system/libroot/posix/unistd/process.c
+++ b/src/system/libroot/posix/unistd/process.c
@@ -1,7 +1,7 @@
-/* 
-** Copyright 2002-2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
-** Distributed under the terms of the Haiku License.
-*/
+/*
+ * Copyright 2002-2007, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
 
 
 #include <syscalls.h>
@@ -73,7 +73,7 @@ setpgid(pid_t process, pid_t group)
 }
 
 
-int
+pid_t
 setpgrp(void)
 {
 	return setpgid(0, 0);