diff --git a/gluon/rocket.py b/gluon/rocket.py
index 373c46b3..eb7c5c57 100644
--- a/gluon/rocket.py
+++ b/gluon/rocket.py
@@ -1850,12 +1850,13 @@ class WSGIWorker(Worker):
                 if data:
                     self.write(data, sections)
 
+            if not self.headers_sent:
+                # Send headers if the body was empty
+                self.send_headers('', sections)
+
             if self.chunked:
                 # If chunked, send our final chunk length
                 self.conn.sendall(b('0\r\n\r\n'))
-            elif not self.headers_sent:
-                # Send headers if the body was empty
-                self.send_headers('', sections)
 
         # Don't capture exceptions here.  The Worker class handles
         # them appropriately.