diff --git a/src/allmydata/test/test_eliotutil.py b/src/allmydata/test/test_eliotutil.py
index cabe599b3..a170468a2 100644
--- a/src/allmydata/test/test_eliotutil.py
+++ b/src/allmydata/test/test_eliotutil.py
@@ -64,7 +64,7 @@ from twisted.internet.task import deferLater
 from twisted.internet import reactor
 
 from ..util.eliotutil import (
-    eliot_json_encoder,
+    BytesEliotJSONEncoder,
     log_call_deferred,
     _parse_destination_description,
     _EliotLogging,
@@ -188,8 +188,8 @@ class ParseDestinationDescriptionTests(SyncTestCase):
         """
         reactor = object()
         self.assertThat(
-            _parse_destination_description("file:-")(reactor),
-            Equals(FileDestination(stdout, encoder=eliot_json_encoder)),
+            _parse_destination_description("file:-")(reactor).file,
+            Equals(stdout),
         )