diff --git a/config/sys.config b/config/sys.config
index c2f3ae4..f11d43b 100644
--- a/config/sys.config
+++ b/config/sys.config
@@ -17,6 +17,8 @@
                {epp_session_url, "https://registry.test/epp/session/"},
                {epp_command_url, "https://registry.test/epp/command/"},
                {epp_error_url, "https://registry.test/epp/error/"},
+               %% Allows client to connect to epp_proxy without client certificate using TLS
+               {require_client_certs, true},
                %% Path to root CA that should check the client certificates.
                {cacertfile_path, "/opt/shared/ca/certs/ca.crt.pem"},
                %% Path to server's certficate file.