diff --git a/xar/configure.ac b/xar/configure.ac

index 812b5ff..1b70c06 100644

--- a/xar/configure.ac

+++ b/xar/configure.ac

@@ -329,7 +329,7 @@ dnl Configure libcrypto (part of OpenSSL).

 dnl 

 have_libcrypto="1"

 AC_CHECK_HEADERS([openssl/evp.h], , [have_libcrypto="0"])

-AC_CHECK_LIB([crypto], [OpenSSL_add_all_ciphers], , [have_libcrypto="0"])

+AC_CHECK_LIB([crypto], [OPENSSL_init_crypto], , [have_libcrypto="0"])

 if test "x${have_libcrypto}" = "x0" ; then

   AC_MSG_ERROR([Cannot build without libcrypto (OpenSSL)])

 fi