diff --git a/ChangeLog b/ChangeLog
index 1e0625d..0589ad5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2002-02-16  Richard Kreckel  <kreckel@ginac.de>
+
+        * cln.m4: quote macro name.
+          Pointed out by Roberto Bagnara.
+
 2002-01-20  Richard Kreckel  <kreckel@ginac.de>
 
         * autoconf/config.{guess,sub}: Update to GNU version 2002-01-02.
diff --git a/cln.m4 b/cln.m4
index 01bab3b..bfe4f1a 100644
--- a/cln.m4
+++ b/cln.m4
@@ -10,7 +10,7 @@
 dnl AC_PATH_CLN([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
 dnl Test for installed CLN library, and define CLN_CPPFLAGS and CLN_LIBS
 dnl
-AC_DEFUN(AC_PATH_CLN,
+AC_DEFUN([AC_PATH_CLN],
 [dnl 
 dnl Get the cppflags and libraries from the cln-config script
 dnl