diff --git a/src/ssl_sock.c b/src/ssl_sock.c
index 69f6835..54da3a0 100644
--- a/src/ssl_sock.c
+++ b/src/ssl_sock.c
@@ -5676,9 +5676,9 @@
 		struct server *srv = objt_server(conn->target);
 
 		if (conn_in_list == CO_FL_SAFE_LIST)
-			MT_LIST_ADDQ(&srv->safe_conns[tid], &conn->list);
+			MT_LIST_TRY_ADDQ(&srv->safe_conns[tid], &conn->list);
 		else
-			MT_LIST_ADDQ(&srv->idle_conns[tid], &conn->list);
+			MT_LIST_TRY_ADDQ(&srv->idle_conns[tid], &conn->list);
 	}
 	return NULL;
 }