diff --git a/src/close-test.js b/src/close-test.js
index fab1114..a8747c5 100644
--- a/src/close-test.js
+++ b/src/close-test.js
@@ -18,7 +18,7 @@ function closeAndWait (stream, callback) {
   pull(
     pull.empty(),
     stream,
-    pull.onEnd(() => callback())
+    pull.onEnd(callback)
   )
 }