diff --git a/configure.ac b/configure.ac
index ffd41be..9fb452e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,6 +16,7 @@ LT_PREREQ([2.0])
 
 # Checks for programs.
 AC_PROG_CC
+AC_PROG_AR
 AC_PROG_LN_S
 AC_PROG_LIBTOOL
 AC_PROG_INSTALL