diff --git a/headers/posix/pthread.h b/headers/posix/pthread.h
index fd40968ef5..e34d46c033 100644
--- a/headers/posix/pthread.h
+++ b/headers/posix/pthread.h
@@ -1,8 +1,8 @@
+/* 
+** Distributed under the terms of the Haiku License.
+*/
 #ifndef _PTHREAD_H_
 #define _PTHREAD_H_
-/* 
-** Distributed under the terms of the OpenBeOS License.
-*/
 
 
 #include <time.h>
@@ -29,6 +29,10 @@ typedef struct _pthread_mutexattr *pthread_mutexattr_t;
 
 //extern pthread_mutexattr_t pthread_mutexattr_default;
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern pthread_mutex_t _pthread_mutex_static_initializer(void);
 extern pthread_mutex_t _pthread_recursive_mutex_static_initializer(void);
 #define PTHREAD_MUTEX_INITIALIZER \
@@ -59,4 +63,11 @@ extern int pthread_mutexattr_setprotocol(pthread_mutexattr_t *mutexAttr, int pro
 extern int pthread_mutexattr_setpshared(pthread_mutexattr_t *mutexAttr, int processShared);
 extern int pthread_mutexattr_settype(pthread_mutexattr_t *mutexAttr, int type);
 
+/* misc. functions */
+extern int pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void));
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif	/* _PTHREAD_ */