diff --git a/ChangeLog b/ChangeLog
index fdcfd99..b6780eb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2005-01-12 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
 
+	* configure.ac: Test for header file <ucontext.h> (for use in
+	  signal processing).
+
+2005-01-12 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
+
 	* configure.ac: If configure is invoked with --enable-snmp, but
 	  the configure script is unable to find SNMP support on the platform,
 	  then configure should give an error message and exit.