diff --git a/configure.ac b/configure.ac
index 04a13a9..0a222a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,6 +13,7 @@ SVN_REVISION=svn_revision
 AC_DEFINE_UNQUOTED([SVN_REVISION], ["$SVN_REVISION"], [SVN revision])
 
 AM_INIT_AUTOMAKE
+AM_PROG_AR
 
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])