diff --git a/lib/contracts/kernel.js b/lib/contracts/kernel.js
index 47e3a4a..7f7f8fd 100644
--- a/lib/contracts/kernel.js
+++ b/lib/contracts/kernel.js
@@ -1,6 +1,6 @@
 const AppIds = require('../app_ids.json');
 const Base = require('./base');
-KERNEL_APP_ADDR_NAMESPACE = '0xd6f028ca0e8edb4a8c9757ca4fdccab25fa1e0317da1188108f7d2dee14902fb';
+const KERNEL_APP_ADDR_NAMESPACE = '0xd6f028ca0e8edb4a8c9757ca4fdccab25fa1e0317da1188108f7d2dee14902fb';
 
 class Kernel extends Base {