diff --git a/uisimulator/grabscreen.h b/uisimulator/grabscreen.h
deleted file mode 100644
index 6d2503a1fc..0000000000
--- a/uisimulator/grabscreen.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/* xscreensaver, Copyright (c) 1992, 1993, 1994, 1997
- *  Jamie Zawinski <jwz@jwz.org>
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation.  No representations are made about the suitability of this
- * software for any purpose.  It is provided "as is" without express or 
- * implied warranty.
- */
-
-#ifndef __GRABSCREEN_H__
-#define __GRABSCREEN_H__
-
-/* This will write a snapshot of the screen image into the given window.
-   Beware that the colormap of the window may also be changed (to match
-   the bits that were drawn.)
- */
-extern void grab_screen_image (Screen *, Window);
-
-/* Whether one should use GCSubwindowMode when drawing on this window
-   (assuming a screen image has been grabbed onto it.)  Yes, this is a
-   total kludge. */
-extern Bool use_subwindow_mode_p(Screen *screen, Window window);
-
-#endif /* __GRABSCREEN_H__ */
diff --git a/uisimulator/screenhack.h b/uisimulator/screenhack.h
index 761b244bec..9b7be53bb4 100644
--- a/uisimulator/screenhack.h
+++ b/uisimulator/screenhack.h
@@ -83,7 +83,6 @@
 #include "resources.h"
 #include "hsv.h"
 #include "colors.h"
-#include "grabscreen.h"
 #include "visual.h"
 
 extern Bool mono_p;