diff --git a/winsup/w32api/ChangeLog b/winsup/w32api/ChangeLog
index 988900081..d2a9d9536 100644
--- a/winsup/w32api/ChangeLog
+++ b/winsup/w32api/ChangeLog
@@ -1,3 +1,8 @@
+2010-08-24  Chris Sutcliffe  <ir0nh34d@users.sourceforge.net>
+
+	* include/prsht.h (SNDMDG, POSTMSG): Fix typo.
+	* include/windowsx.h (SNDMSG): Ditto.
+
 2010-08-24  Chris Sutcliffe  <ir0nh34d@users.sourceforge.net>
 
 	* include/prsht.h (SNDMSG, POSTMSG): Define macros and use throughout.
diff --git a/winsup/w32api/include/prsht.h b/winsup/w32api/include/prsht.h
index 325435979..a7706ab2b 100644
--- a/winsup/w32api/include/prsht.h
+++ b/winsup/w32api/include/prsht.h
@@ -6,17 +6,17 @@
 
 #ifndef SNDMSG
 #ifdef __cplusplus
-#define SNDMSG ::SNDMSG
+#define SNDMSG ::SendMessage
 #else
-#define SNDMSG SNDMSG
+#define SNDMSG SendMessage
 #endif
 #endif /* ifndef SNDMSG */
 
 #ifndef POSTMSG
 #ifdef __cplusplus
-#define POSTMSG ::POSTMSG
+#define POSTMSG ::PostMessage
 #else
-#define POSTMSG POSTMSG
+#define POSTMSG PostMessage
 #endif
 #endif /* ifndef POSTMSG */
 
diff --git a/winsup/w32api/include/windowsx.h b/winsup/w32api/include/windowsx.h
index f0510a665..ec7930bd2 100644
--- a/winsup/w32api/include/windowsx.h
+++ b/winsup/w32api/include/windowsx.h
@@ -6,9 +6,9 @@
 
 #ifndef SNDMSG
 #ifdef __cplusplus
-#define SNDMSG ::SNDMSG
+#define SNDMSG ::SendMessage
 #else
-#define SNDMSG SNDMSG
+#define SNDMSG SendMessage
 #endif
 #endif /* ifndef SNDMSG */