diff --git a/src/ring/sse.clj b/src/ring/sse.clj
index 5b3a7aa..df9eba1 100644
--- a/src/ring/sse.clj
+++ b/src/ring/sse.clj
@@ -11,8 +11,7 @@
   clojure.core.async.impl.channels.ManyToManyChannel
   (write-body-to-stream [ch response ^java.io.OutputStream output-stream]
     (async/thread
-      (with-open [os  output-stream
-                  out (io/writer os)]
+      (with-open [out (io/writer output-stream)]
         (try
           (loop []
             (if-some [^String msg (async/<!! ch)]