diff --git a/winsup/w32api/ChangeLog b/winsup/w32api/ChangeLog
index 123ef8bb2..e58c92e34 100644
--- a/winsup/w32api/ChangeLog
+++ b/winsup/w32api/ChangeLog
@@ -1,3 +1,7 @@
+Wed Dec 20 13:34:00 2000  Corinna Vinschen <corinna@vinschen.de>
+
+	* include/winbase.h: Add prototype for SetSecurityDescriptorControl.
+
 Mon Dec 11 13:11:36 2000  Christopher Faylor <cgf@cygnus.com>
 
 	* lib/Makefile.in: Install headers and libraries in tooldir.
diff --git a/winsup/w32api/include/winbase.h b/winsup/w32api/include/winbase.h
index d147bb89b..9c3958197 100644
--- a/winsup/w32api/include/winbase.h
+++ b/winsup/w32api/include/winbase.h
@@ -1486,6 +1486,7 @@ BOOL WINAPI SetProcessAffinityMask(HANDLE,DWORD);
 BOOL WINAPI SetProcessPriorityBoost(HANDLE,BOOL);
 BOOL WINAPI SetProcessShutdownParameters(DWORD,DWORD);
 BOOL WINAPI SetProcessWorkingSetSize(HANDLE,DWORD,DWORD);
+BOOL WINAPI SetSecurityDescriptorControl(PSECURITY_DESCRIPTOR,SECURITY_DESCRIPTOR_CONTROL,SECURITY_DESCRIPTOR_CONTROL);
 BOOL WINAPI SetSecurityDescriptorDacl(PSECURITY_DESCRIPTOR,BOOL,PACL,BOOL);
 BOOL WINAPI SetSecurityDescriptorGroup(PSECURITY_DESCRIPTOR,PSID,BOOL);
 BOOL WINAPI SetSecurityDescriptorOwner(PSECURITY_DESCRIPTOR,PSID,BOOL);