diff --git a/configure.ac b/configure.ac
index dfebb14..b3bd072 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,8 +36,8 @@ if test "$pgac_cv_var_PS_STRINGS" = yes ; then
   AC_DEFINE([HAVE_PS_STRINGS], [], [Define to 1 if the PS_STRINGS struct exists on your platform (likely no).])
 fi
 
-AC_PATH_PROG(AR, ar)
-AC_PATH_PROG(RANLIB, ranlib)
+AC_CHECK_TOOL(AR, ar)
+AC_CHECK_TOOL(RANLIB, ranlib)
 
 LIBMOWGLI_MODULES="core base container dns eventloop ext linebuf module object platform thread vio"
 AC_SUBST(LIBMOWGLI_MODULES)