diff --git a/lib/cmds/blockchain/blockchain.js b/lib/cmds/blockchain/blockchain.js
index 1162fd80..8607a10f 100644
--- a/lib/cmds/blockchain/blockchain.js
+++ b/lib/cmds/blockchain/blockchain.js
@@ -48,7 +48,7 @@ class Blockchain {
   }
 
   run () {
-    var self = this;
+    let self = this;
     console.log("===============================================================================".magenta);
     console.log("===============================================================================".magenta);
     console.log(("Embark Blockchain Using: " + this.client.name.underline).magenta);