diff --git a/build.sh b/build.sh
index d2be4b03..e3f76f19 100755
--- a/build.sh
+++ b/build.sh
@@ -22,7 +22,7 @@ HAVE_LWT=`ocamlfind query lwt 2>/dev/null || true`
 HAVE_LWT_SSL=`ocamlfind query lwt.ssl 2>/dev/null || true`
 HAVE_LWT_TLS=`ocamlfind query tls.lwt 2>/dev/null || true`
 HAVE_MIRAGE=`ocamlfind query mirage-types dns.mirage tcpip vchan 2>/dev/null || true`
-HAVE_MIRAGE_TLS="" # activate manually for now
+HAVE_MIRAGE_TLS=`ocamlfind query tls.mirage 2>/dev/null || true`
 HAVE_VCHAN=`ocamlfind query vchan 2>/dev/null || true`
 HAVE_VCHAN_LWT=`ocamlfind query vchan.lwt xen-evtchn.unix 2>/dev/null || true`
 HAVE_XEN=`ocamlfind query mirage-xen xenstore_transport 2>/dev/null || true`
diff --git a/lib/conduit_lwt_tls.ml b/lib/conduit_lwt_tls.ml
index 1389d035..f4a2bdcb 100644
--- a/lib/conduit_lwt_tls.ml
+++ b/lib/conduit_lwt_tls.ml
@@ -17,7 +17,7 @@
 
 open Lwt
 
-let _ = Tls_lwt.rng_init ()
+let _ = Nocrypto_entropy_lwt.initialize ()
 
 let with_socket sockaddr f =
   let fd = Lwt_unix.socket (Unix.domain_of_sockaddr sockaddr) Unix.SOCK_STREAM 0 in