--- a/src/thread_os2.cpp	Sun Jun 08 12:28:23 2008 +0000
+++ b/src/thread_os2.cpp	Sun Jun 08 15:27:57 2008 +0000
@@ -59,7 +59,7 @@
 
 #endif
 
-/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param, OTTDThreadTerminateFunc terminate_func)
+/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
 {
 	return NULL;
 }