diff --git a/winsup/w32api/ChangeLog b/winsup/w32api/ChangeLog
index d81452d7b..9a3d84000 100644
--- a/winsup/w32api/ChangeLog
+++ b/winsup/w32api/ChangeLog
@@ -1,3 +1,7 @@
+2004-11-19  Magnus Olsen  <greatlord@sourceforge.users.net>
+
+	* include/winuser.h (MSLLHOOKSTRUCT): Add structure.
+
 2004-11-19  Magnus Olsen  <greatlord@sourceforge.users.net>
 
 	* include/winuser.h (LLKHF_EXTENDED, LLKHF_INJECTED, LLKHF_UP):
diff --git a/winsup/w32api/include/winuser.h b/winsup/w32api/include/winuser.h
index 4754d1ac5..e26edb6da 100644
--- a/winsup/w32api/include/winuser.h
+++ b/winsup/w32api/include/winuser.h
@@ -3175,6 +3175,14 @@ typedef struct tagRAWINPUTDEVICELIST {
 } RAWINPUTDEVICELIST,*PRAWINPUTDEVICELIST;
 #endif /* (_WIN32_WINNT >= 0x0501) */
 
+typedef struct {
+	POINT pt;
+	DWORD mouseData;
+	DWORD flags;
+	DWORD time;
+	ULONG_PTR dwExtraInfo;
+} MSLLHOOKSTRUCT, *PMSLLHOOKSTRUCT;
+
 #define AnsiToOem CharToOemA
 #define OemToAnsi OemToCharA
 #define AnsiToOemBuff CharToOemBuffA