diff --git a/otk/pseudorendercontrol.cc b/otk/pseudorendercontrol.cc
index 4e2691a2..2b878200 100644
--- a/otk/pseudorendercontrol.cc
+++ b/otk/pseudorendercontrol.cc
@@ -101,7 +101,12 @@ PseudoRenderControl::~PseudoRenderControl()
 {
   printf("Destroying PseudoColor RenderControl\n");
 
-  delete _colors;
+  unsigned long *pixels = new unsigned long [ncolors], *p = pixels;
+  for (int i = 0; i < _ncolors; ++i, ++p)
+    *p = _colors[i].pixel;
+  XFreeColors(**display, display->screenInfo(_screen)->colormap(), pixels,
+              _ncolors, 0);
+  delete [] colors;
 }
 
 void PseudoRenderControl::reduceDepth(Surface &sf, XImage *im) const