diff --git a/appengine-plugins-core/src/main/java/com/google/cloud/tools/appengine/operations/DevServer.java b/appengine-plugins-core/src/main/java/com/google/cloud/tools/appengine/operations/DevServer.java
index 2f88fe414..1c74d68bf 100644
--- a/appengine-plugins-core/src/main/java/com/google/cloud/tools/appengine/operations/DevServer.java
+++ b/appengine-plugins-core/src/main/java/com/google/cloud/tools/appengine/operations/DevServer.java
@@ -205,7 +205,8 @@ public void stop(StopConfiguration configuration) throws AppEngineException {
       connection.setDoOutput(true);
       connection.setDoInput(true);
       connection.setRequestMethod("POST");
-      connection.getOutputStream().write('\n');
+      connection.setRequestProperty("Content-Length", "0");
+      connection.getOutputStream().close();
       connection.disconnect();
       int responseCode = connection.getResponseCode();
       if (responseCode < 200 || responseCode > 299) {