diff --git a/src/node-red/cnt.js b/src/node-red/cnt.js
index 1844097ac2b1fe016cd0ee387d4bf2fda33d3559..5e938cb9c0ba59013b71c847372d730666fe43b7 100644
--- a/src/node-red/cnt.js
+++ b/src/node-red/cnt.js
@@ -126,7 +126,7 @@ module.exports = function (RED) {
                 'headers': {
                     'X-M2M-RI': ri,
                     'X-M2M-Origin': adminOriginator,
-                    "X-M2M-RVI": "3",
+                    'X-M2M-RVI': '3',
                     'accept': 'application/json'
                 }
             };