diff --git a/configure.ac b/configure.ac
index 597a8ff4..73a537c8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,6 @@
 dnl -*- mode: m4; -*-
-dnl Process this file with autoconf to produce a configure script.
 
-# Require autoconf 2.52
-AC_PREREQ([2.52])
+AC_PREREQ([2.60])
 
 define([PACKAGE_VERSION_MAJOR], [0])
 define([PACKAGE_VERSION_MINOR], [11])
@@ -561,17 +559,6 @@ if test "$GCC" = "yes"; then
 	CFLAGS="-fno-strict-aliasing ${CFLAGS}"
 fi
 
-# workaround for <autoconf-2.60
-if test -z "${docdir}"; then
-	docdir="\$(datarootdir)/doc/\$(PACKAGE_NAME)"
-	AC_SUBST([docdir])
-fi
-if test -z "${htmldir}"; then
-	htmldir="\$(docdir)"
-	AC_SUBST([htmldir])
-fi
-# end workaround
-
 AC_OUTPUT([
 	Makefile
 	aclocal/Makefile