diff --git a/src/kernel/libroot/os/arch/x86/thread.c b/src/kernel/libroot/os/arch/x86/thread.c
index 7d477089c6..697bb0373c 100644
--- a/src/kernel/libroot/os/arch/x86/thread.c
+++ b/src/kernel/libroot/os/arch/x86/thread.c
@@ -1,15 +1,17 @@
 /* 
-** Copyright 2003-2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
-** Distributed under the terms of the OpenBeOS License.
-*/
+ * Copyright 2003-2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
 
 
 #include <OS.h>
 #include "syscalls.h"
 
 
-// see OS.h for the reason why we need this
-thread_id _kfind_thread_(const char *name);
+// see OS.h from BeOS R5 for the reason why we need this
+// (it's referenced there in the same way we reference _kern_find_thread())
+extern thread_id _kfind_thread_(const char *name);
+
 
 thread_id
 _kfind_thread_(const char *name)