diff --git a/src/context.c b/src/context.c
index 6264ae99..453b0041 100644
--- a/src/context.c
+++ b/src/context.c
@@ -926,6 +926,7 @@ upstream_init(getdns_upstream *upstream,
 	/* For sharing a socket to this upstream with TCP  */
 	upstream->fd       = -1;
 	upstream->expires  = 0;
+	upstream->tls_fallback_ok = 0;
 	upstream->tls_obj  = NULL;
 	upstream->tls_session = NULL;
 	upstream->tls_cipher_list = NULL;