diff --git a/dlls/user/tests/msg.c b/dlls/user/tests/msg.c
index 175c5bb0e21..3ddb8789aa8 100644
--- a/dlls/user/tests/msg.c
+++ b/dlls/user/tests/msg.c
@@ -42,6 +42,10 @@
 
 #define SW_NORMALNA	        0xCC    /* undoc. flag in MinMaximize */
 
+#ifndef WM_SYSTIMER
+#define WM_SYSTIMER	    0x0118
+#endif
+
 #define WND_PARENT_ID		1
 #define WND_POPUP_ID		2
 #define WND_CHILD_ID		3
diff --git a/dlls/user/user_private.h b/dlls/user/user_private.h
index acb1f5a6727..1a975b4eb33 100644
--- a/dlls/user/user_private.h
+++ b/dlls/user/user_private.h
@@ -81,6 +81,8 @@ static inline HLOCAL16 LOCAL_Free( HANDLE16 ds, HLOCAL16 handle )
 #define GET_WORD(ptr)  (*(const WORD *)(ptr))
 #define GET_DWORD(ptr) (*(const DWORD *)(ptr))
 
+#define WM_SYSTIMER	    0x0118
+
 /* internal messages codes */
 enum wine_internal_message
 {
diff --git a/include/winuser.h b/include/winuser.h
index 4cb8a4795f5..8015ea20eec 100644
--- a/include/winuser.h
+++ b/include/winuser.h
@@ -1105,7 +1105,6 @@ BOOL        WINAPI SetSysColors(INT,const INT*,const COLORREF*);
 #define WM_COMMAND          0x0111
 #define WM_SYSCOMMAND       0x0112
 #define WM_TIMER	    0x0113
-#define WM_SYSTIMER	    0x0118
 
   /* scroll messages */
 #define WM_HSCROLL          0x0114