diff --git a/src/openvpn/multi.c b/src/openvpn/multi.c
index 22357cfb..c72e8e95 100644
--- a/src/openvpn/multi.c
+++ b/src/openvpn/multi.c
@@ -557,6 +557,10 @@ setenv_stats(struct context *c)
 static void
 multi_client_disconnect_setenv(struct multi_instance *mi)
 {
+    /* setenv client current common-name */
+    setenv_str(mi->context.c2.es, "common_name",
+               tls_common_name(mi->context.c2.tls_multi, true));
+
     /* setenv client real IP address */
     setenv_trusted(mi->context.c2.es, get_link_socket_info(&mi->context));