--- configure.ac.orig	2018-08-01 13:02:42 UTC
+++ configure.ac
@@ -176,7 +176,7 @@ AC_ARG_WITH([openssl],
     [with_openssl=check])
 
 AS_IF([test x"$with_openssl" != xno],
-    [AX_PKG_CHECK_MODULES([openssl],,[libcrypto],
+    [AX_PKG_CHECK_MODULES([openssl],,[],
         [with_openssl=found
          AC_DEFINE([XSEC_HAVE_OPENSSL],[1],[Define if OpenSSL is in use])