diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 098ae2963..81ecf55c7 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2013-02-26  Corinna Vinschen  <corinna@vinschen.de>
+
+	* include/pthread.h (pthread_atfork): Add missing declaration.
+
 2013-02-20  Yaakov Selkowitz  <yselkowitz@users.sourceforge.net>
 
 	* include/error.h (error_message_count): Declare as dllimport.
diff --git a/winsup/cygwin/include/pthread.h b/winsup/cygwin/include/pthread.h
index 6cb7ddf42..c6798f13a 100644
--- a/winsup/cygwin/include/pthread.h
+++ b/winsup/cygwin/include/pthread.h
@@ -63,6 +63,8 @@ extern "C"
 #define PTHREAD_SCOPE_PROCESS 0
 #define PTHREAD_SCOPE_SYSTEM 1
 
+/* Register Fork Handlers */
+int pthread_atfork (void (*)(void), void (*)(void), void (*)(void));
 
 /* Attributes */
 int pthread_attr_destroy (pthread_attr_t *);