diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 9413511a7..268378f64 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2004-02-03  Jason Tishler <jason@tishler.net>
+
+	* window.cc (Winmain): Show windows error code in error output when
+	RegisterClass fails.
+
 2004-02-02  Christopher Faylor  <cgf@redhat.com>
 
 	* fhandler.h (*::fixup_after_exec): Eliminate unused handle argument.
diff --git a/winsup/cygwin/window.cc b/winsup/cygwin/window.cc
index f9f5da23a..a96337ae1 100644
--- a/winsup/cygwin/window.cc
+++ b/winsup/cygwin/window.cc
@@ -97,7 +97,7 @@ Winmain (VOID *)
 
   if (!RegisterClass (&wc))
     {
-      system_printf ("Cannot register window class");
+      system_printf ("Cannot register window class, %E");
       return FALSE;
     }