diff --git a/winsup/w32api/ChangeLog b/winsup/w32api/ChangeLog
index 6d31259d2..7f21c8c6b 100644
--- a/winsup/w32api/ChangeLog
+++ b/winsup/w32api/ChangeLog
@@ -1,3 +1,8 @@
+2008-09-21  Chris Sutcliffe  <ir0nh34d@users.sf.net>
+
+	* incude/sspi.h: include subauth.h to fix issue of UNICODE_STRING being
+	undefined.
+
 2008-09-13  mega-squall  <mega-squall@users.sf.net>
 
 	* include/winnt.h (SUBLANG_BENGALI_INDIA, SUBLANG_PUNJABI_INDIA,
diff --git a/winsup/w32api/include/sspi.h b/winsup/w32api/include/sspi.h
index 408331692..07639e84a 100644
--- a/winsup/w32api/include/sspi.h
+++ b/winsup/w32api/include/sspi.h
@@ -8,6 +8,8 @@
 extern "C" {
 #endif
 
+#include <subauth.h>
+
 #define SECPKG_CRED_INBOUND 1
 #define SECPKG_CRED_OUTBOUND 2
 #define SECPKG_CRED_BOTH (SECPKG_CRED_OUTBOUND|SECPKG_CRED_INBOUND)