diff --git a/winsup/w32api/ChangeLog b/winsup/w32api/ChangeLog
index 94ed61b8e..abd4a4b79 100644
--- a/winsup/w32api/ChangeLog
+++ b/winsup/w32api/ChangeLog
@@ -1,4 +1,10 @@
+2009-13-09  Jan Nijtmans  <nijtmans@users.sourceforge.net>
+
+	* include/winuser.h (SendMessageTimeoutA, SendMessageTimeoutW): Correct
+	definition.
+
 2009-11-09  Chris Sutcliffe  <ir0nh34d@users.sourceforge.net>
+
 	* include/winnt.h (PROCESS_SUSPEND_RESUME): Define.
 
 2009-10-29  Charles Wilson  <mingw@cwilson.fastmail.fm>
diff --git a/winsup/w32api/include/winuser.h b/winsup/w32api/include/winuser.h
index bd935aaf0..cb63deaa6 100644
--- a/winsup/w32api/include/winuser.h
+++ b/winsup/w32api/include/winuser.h
@@ -3956,8 +3956,8 @@ WINUSERAPI UINT WINAPI SendInput(UINT,LPINPUT,int);
 WINUSERAPI LRESULT WINAPI SendMessageA(HWND,UINT,WPARAM,LPARAM);
 WINUSERAPI BOOL WINAPI SendMessageCallbackA(HWND,UINT,WPARAM,LPARAM,SENDASYNCPROC,DWORD);
 WINUSERAPI BOOL WINAPI SendMessageCallbackW(HWND,UINT,WPARAM,LPARAM,SENDASYNCPROC,DWORD);
-WINUSERAPI LRESULT WINAPI SendMessageTimeoutA(HWND,UINT,WPARAM,LPARAM,UINT,UINT,PDWORD);
-WINUSERAPI LRESULT WINAPI SendMessageTimeoutW(HWND,UINT,WPARAM,LPARAM,UINT,UINT,PDWORD);
+WINUSERAPI LRESULT WINAPI SendMessageTimeoutA(HWND,UINT,WPARAM,LPARAM,UINT,UINT,PDWORD_PTR);
+WINUSERAPI LRESULT WINAPI SendMessageTimeoutW(HWND,UINT,WPARAM,LPARAM,UINT,UINT,PDWORD_PTR);
 WINUSERAPI LRESULT WINAPI SendMessageW(HWND,UINT,WPARAM,LPARAM);
 WINUSERAPI BOOL WINAPI SendNotifyMessageA(HWND,UINT,WPARAM,LPARAM);
 WINUSERAPI BOOL WINAPI SendNotifyMessageW(HWND,UINT,WPARAM,LPARAM);