diff --git a/lib/index.js b/lib/index.js
index 7fb457b36..e9b6aabfb 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -71,10 +71,11 @@ module.exports = function(config_hash) {
 				if (!res.status || !res.send) {
 					Logger.logger.error('this is an error in express.js, please report this')
 					res.destroy()
-				}
-				if (calls == 1) {
+				} else if (calls == 1) {
 					res.status(500)
 					res.send({error: 'internal server error'})
+				} else {
+					// socket should be already closed
 				}
 			}
 		}