1 files changed, 1 insertions, 0 deletions
diff --git a/lib/response.js b/lib/response.js
index 31fa18b2..13a94bbf 100755
--- a/lib/response.js
+++ b/lib/response.js
@@ -1,3 +1,4 @@
+'use strict'
 // response
 // external modules
 var fs = require('fs')