diff --git a/eventlet/wsgi.py b/eventlet/wsgi.py
index 9d39ead..4149308 100644
--- a/eventlet/wsgi.py
+++ b/eventlet/wsgi.py
@@ -274,7 +274,7 @@ class HttpProtocol(BaseHTTPServer.BaseHTTPRequestHandler):
                     towrite.append("%x\r\n%s\r\n" % (len(data), data))
                 else:
                     # last-chunk format
-                    towrite.append("0\r\n")
+                    towrite.append("0\r\n\r\n")
             else:
                 towrite.append(data)
             try: