diff --git a/src/main/java/se/yolean/kafka/keyvalue/Endpoints.java b/src/main/java/se/yolean/kafka/keyvalue/Endpoints.java
index 37c245c..c315477 100644
--- a/src/main/java/se/yolean/kafka/keyvalue/Endpoints.java
+++ b/src/main/java/se/yolean/kafka/keyvalue/Endpoints.java
@@ -108,6 +108,7 @@ public void write(OutputStream out) throws IOException, WebApplicationException
         while (values.hasNext()) {
           out.write(values.next());
           out.write('\n');
+          out.flush();
         }
       }
     };