diff --git a/ChangeLog b/ChangeLog
index 44536622..6d0998b1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2001-09-11  Gary V. Vaughan  <gary@gnu.org>
+
+	* libtool.m4: No need to undefine([symbols]), proper quotation is
+	enough.
+
 2001-09-10  Gary V. Vaughan  <gary@gnu.org>
 
 	* libtool.m4: CVS Autoconf guarantees a decent default IFS, so
diff --git a/libtool.m4 b/libtool.m4
index e68ea04c..9e0f3e3c 100644
--- a/libtool.m4
+++ b/libtool.m4
@@ -24,8 +24,6 @@
 
 # serial 47 AC_PROG_LIBTOOL
 
-builtin([undefine],[symbols])
-
 # AC_PROG_LIBTOOL
 # ---------------
 AC_DEFUN([AC_PROG_LIBTOOL],