diff --git a/src/dns.c b/src/dns.c
index c0494ae0d..b8d488276 100644
--- a/src/dns.c
+++ b/src/dns.c
@@ -832,6 +832,7 @@ static int dns_session_init(struct appctx *appctx)
 
 	applet_expect_no_data(appctx);
 	ds->appctx = appctx;
+	appctx->t->expire = TICK_ETERNITY;
 	return 0;
 
   error: