diff --git a/src/cheaders/ChangeLog b/src/cheaders/ChangeLog
index 4998ac4c3c..e882fc0ce8 100644
--- a/src/cheaders/ChangeLog
+++ b/src/cheaders/ChangeLog
@@ -1,3 +1,7 @@
+2001-09-02  Angus Leeming  <a.leeming@ic.ac.uk>
+
+	* cassert: new file. (Required by the boost tuple stuff).
+
 2001-06-01  Jean-Marc Lasgouttes  <Jean-Marc.Lasgouttes@inria.fr>
 
 	* climits: new file
diff --git a/src/cheaders/cassert b/src/cheaders/cassert
new file mode 100644
index 0000000000..b4165bfae7
--- /dev/null
+++ b/src/cheaders/cassert
@@ -0,0 +1,7 @@
+// -*- C++ -*- forwarding header.
+// This file is part of the GNU ANSI C++ Library.
+
+#ifndef __CASSERT__
+#define __CASSERT__
+#include <assert.h>
+#endif