diff --git a/ChangeLog b/ChangeLog
index 4cf3d188..d0c2e9f4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-12-13  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* configure.ac (AC_PREREQ): Require Autoconf 2.61 because of our
+	strange test case titles.  Reported by Bob Rossi.
+
 2006-12-13  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* TODO: Add pointer to Sylvain Schmitz's work on static detection
diff --git a/configure.ac b/configure.ac
index e71fadb4..22bfb202 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,8 +18,8 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 # 02110-1301  USA
 
-# We use macros like AC_CHECK_HEADERS_ONCE, so we need Autoconf 2.60 or better.
-AC_PREREQ(2.60)
+# We have strange test case titles, so we need Autoconf 2.61 or better.
+AC_PREREQ(2.61)
 
 AC_INIT([GNU Bison], [2.3a+], [bug-bison@gnu.org])
 AC_CONFIG_AUX_DIR([build-aux])