diff --git a/include/commctrl.h b/include/commctrl.h
index 632178a656931eef78ec191566caeee204343a87..07fc811c75bb2a25be6827408a31c510bf90a018 100644
--- a/include/commctrl.h
+++ b/include/commctrl.h
@@ -102,7 +102,7 @@ VOID WINAPI InitMUILanguage (LANGID uiLang);
 #define NM_SETCURSOR            (NM_FIRST-17)
 #define NM_CHAR                 (NM_FIRST-18)
 #define NM_TOOLTIPSCREATED      (NM_FIRST-19)
-#define NM_UPDOWN                NMUPDOWN
+#define NMUPDOWN                NM_UPDOWN
 
 /* callback constants */
 #define LPSTR_TEXTCALLBACKA    ((LPSTR)-1L)