diff --git a/extra/benchmark/echo/echo.factor b/extra/benchmark/echo/echo.factor
index 13ae0d2c9a..c5c0dab214 100644
--- a/extra/benchmark/echo/echo.factor
+++ b/extra/benchmark/echo/echo.factor
@@ -12,8 +12,8 @@ IN: benchmark.echo
 : udp-echo ( -- )
     [
         10000 iota [ 4 >be ] map
-        f 0 <inet4> <datagram>
-        f 0 <inet4> <datagram>
+        "127.0.0.1" 0 <inet4> <datagram>
+        "127.0.0.1" 0 <inet4> <datagram>
         [ send/recv ] 2curry each
     ] with-destructors ;