diff --git a/uisimulator/Makefile b/uisimulator/Makefile
index 8d118589a0..1ad5649eb7 100644
--- a/uisimulator/Makefile
+++ b/uisimulator/Makefile
@@ -28,8 +28,8 @@ LDFLAGS = -lX11 -lm -lXt -lXmu -lsocket -lnsl
 
 DEPEND = .depends
 
-OBJS=   alpha.o hsv.o screenhack.o yarandom.o uibasic.o resources.o visual.o\
-	usleep.o lcd.o lcd-x11.o
+OBJS=   alpha.o screenhack.o yarandom.o uibasic.o resources.o visual.o\
+	lcd.o lcd-x11.o
 
 SRCS = $(OBJS:%.o=%.c)
 HDRS = $(OBJS:%.o=%.h)
diff --git a/uisimulator/alpha.c b/uisimulator/alpha.c
index 22504fcd93..39abd33251 100644
--- a/uisimulator/alpha.c
+++ b/uisimulator/alpha.c
@@ -135,81 +135,3 @@ initialize_transparency_colormap (Display *dpy, Colormap cmap,
   XFree ((XPointer) all_colors);
 }
 
-
-Bool
-allocate_alpha_colors (Screen *screen, Visual *visual, Colormap cmap,
-		       int *nplanesP, Bool additive_p,
-		       unsigned long **plane_masks,
-		       unsigned long *base_pixelP)
-{
-  Display *dpy = DisplayOfScreen (screen);
-  XColor *colors;
-  int nplanes = *nplanesP;
-  int i;
-
-  if (!has_writable_cells (screen, visual))
-    cmap = 0;
-
-  if (!cmap)            /* A TrueColor visual, or similar. */
-    {
-      int depth = visual_depth (screen, visual);
-      unsigned long masks;
-      XVisualInfo vi_in, *vi_out;
-
-      /* Find out which bits the R, G, and B components actually occupy
-         on this visual. */
-      vi_in.screen = screen_number (screen);
-      vi_in.visualid = XVisualIDFromVisual (visual);
-      vi_out = XGetVisualInfo (dpy, VisualScreenMask|VisualIDMask,
-                               &vi_in, &i);
-      if (! vi_out) abort ();
-      masks = vi_out[0].red_mask | vi_out[0].green_mask | vi_out[0].blue_mask;
-      XFree ((char *) vi_out);
-
-      if (nplanes > depth)
-        nplanes = depth;
-      *nplanesP = nplanes;
-      *base_pixelP = 0;
-      *plane_masks = (unsigned long *) calloc(sizeof(unsigned long), nplanes);
-
-      /* Pick the planar values randomly, but constrain them to fall within
-         the bit positions of the R, G, and B fields. */
-      for (i = 0; i < nplanes; i++)
-        (*plane_masks)[i] = random() & masks;
-
-    }
-  else                  /* A PseudoColor visual, or similar. */
-    {
-      if (nplanes > 31) nplanes = 31;
-      *plane_masks = (unsigned long *) malloc(sizeof(unsigned long) * nplanes);
-
-      nplanes = allocate_color_planes (dpy, cmap, nplanes, *plane_masks,
-				   base_pixelP);
-      *nplanesP = nplanes;
-
-      if (nplanes <= 1)
-        {
-          free(*plane_masks);
-          *plane_masks = 0;
-          return False;
-        }
-
-      colors = (XColor *) calloc (nplanes, sizeof (XColor));
-      for (i = 0; i < nplanes; i++)
-        {
-          /* pick the base colors. If we are in subtractive mode, pick higher
-             intensities. */
-          hsv_to_rgb (random () % 360,
-                      frand (1.0),
-                      frand (0.5) + (additive_p ? 0.2 : 0.5),
-                      &colors[i].red,
-                      &colors[i].green,
-                      &colors[i].blue);
-        }
-      initialize_transparency_colormap (dpy, cmap, nplanes,
-                                        *base_pixelP, *plane_masks, colors,
-                                        additive_p);
-      XFree ((XPointer) colors);
-    }
-  return True;
-}
diff --git a/uisimulator/hsv.c b/uisimulator/hsv.c
deleted file mode 100644
index cf1cc8d18e..0000000000
--- a/uisimulator/hsv.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/* xscreensaver, Copyright (c) 1992, 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.
- */
-
-/* This file contains some utility routines for randomly picking the colors
-   to hack the screen with.
- */
-
-#include "utils.h"
-#include "hsv.h"
-
-void
-hsv_to_rgb (int h, double s, double v,
-	    unsigned short *r, unsigned short *g, unsigned short *b)
-{
-  double H, S, V, R, G, B;
-  double p1, p2, p3;
-  double f;
-  int i;
-
-  if (s < 0) s = 0;
-  if (v < 0) v = 0;
-  if (s > 1) s = 1;
-  if (v > 1) v = 1;
-
-  S = s; V = v;
-  H = (h % 360) / 60.0;
-  i = H;
-  f = H - i;
-  p1 = V * (1 - S);
-  p2 = V * (1 - (S * f));
-  p3 = V * (1 - (S * (1 - f)));
-  if	  (i == 0) { R = V;  G = p3; B = p1; }
-  else if (i == 1) { R = p2; G = V;  B = p1; }
-  else if (i == 2) { R = p1; G = V;  B = p3; }
-  else if (i == 3) { R = p1; G = p2; B = V;  }
-  else if (i == 4) { R = p3; G = p1; B = V;  }
-  else		   { R = V;  G = p1; B = p2; }
-  *r = R * 65535;
-  *g = G * 65535;
-  *b = B * 65535;
-}
-
-void
-rgb_to_hsv (unsigned short r, unsigned short g, unsigned short b,
-	    int *h, double *s, double *v)
-{
-  double R, G, B, H, S, V;
-  double cmax, cmin;
-  double cmm;
-  int imax;
-  R = ((double) r) / 65535.0;
-  G = ((double) g) / 65535.0;
-  B = ((double) b) / 65535.0;
-  cmax = R; cmin = G; imax = 1;
-  if  ( cmax < G ) { cmax = G; cmin = R; imax = 2; }
-  if  ( cmax < B ) { cmax = B; imax = 3; }
-  if  ( cmin > B ) { cmin = B; }
-  cmm = cmax - cmin;
-  V = cmax;
-  if (cmm == 0)
-    S = H = 0;
-  else
-    {
-      S = cmm / cmax;
-      if       (imax == 1)    H =       (G - B) / cmm;
-      else  if (imax == 2)    H = 2.0 + (B - R) / cmm;
-      else /*if (imax == 3)*/ H = 4.0 + (R - G) / cmm;
-      if (H < 0) H += 6.0;
-    }
-  *h = (H * 60.0);
-  *s = S;
-  *v = V;
-}