diff --git a/winsup/w32api/ChangeLog b/winsup/w32api/ChangeLog
index fa09a6661..c1606a802 100644
--- a/winsup/w32api/ChangeLog
+++ b/winsup/w32api/ChangeLog
@@ -1,3 +1,7 @@
+2009-01-07  Corinna Vinschen  <corinna@vinschen.de>
+
+	* include/winbase.h (SCS_64BIT_BINARY): Define.
+
 2008-12-05  Chris Sutcliffe  <ir0nh34d@users.sf.net>
 
 	* include/w32api.h: Increment version to 3.13.
diff --git a/winsup/w32api/include/winbase.h b/winsup/w32api/include/winbase.h
index b27bd93e9..99653c5ba 100644
--- a/winsup/w32api/include/winbase.h
+++ b/winsup/w32api/include/winbase.h
@@ -217,6 +217,7 @@ extern "C" {
 #define STILL_ACTIVE 0x103
 #define FIND_FIRST_EX_CASE_SENSITIVE 1
 #define SCS_32BIT_BINARY 0
+#define SCS_64BIT_BINARY 6
 #define SCS_DOS_BINARY 1
 #define SCS_OS216_BINARY 5
 #define SCS_PIF_BINARY 3