diff --git a/extra/benchmark/udp-echo0/udp-echo0.factor b/extra/benchmark/udp-echo0/udp-echo0.factor
index 8417e5bce3..23898a977a 100644
--- a/extra/benchmark/udp-echo0/udp-echo0.factor
+++ b/extra/benchmark/udp-echo0/udp-echo0.factor
@@ -12,8 +12,8 @@ IN: benchmark.udp-echo0
 : udp-echo ( #times #bytes -- )
     '[
         _ iota [ _ >be ] map
-        "127.0.0.1" 0 <inet4> <datagram>
-        "127.0.0.1" 0 <inet4> <datagram>
+        "127.0.0.1" 0 <inet4> <datagram> &dispose
+        "127.0.0.1" 0 <inet4> <datagram> &dispose
         [ send/recv ] 2curry each
     ] with-destructors ;