diff --git a/server/web3admin/be/blockchain.js b/server/web3admin/be/blockchain.js
index 02b9d4b..afd7879 100644
--- a/server/web3admin/be/blockchain.js
+++ b/server/web3admin/be/blockchain.js
@@ -4,7 +4,7 @@ const metamgr = require('./metamgr');
 const utils = require('./utils');
 const sync = require("./sync");
 const log = require("./log");
-const C = require("./C");
+const constant = require("./constant");
 
 class BlockChain {
 
@@ -33,7 +33,7 @@ class BlockChain {
     }
     setTimeout(this.refreshBlockNumber.bind(this), 1000 * 0.01);
     await this.mustBeActive();
-    utils.emitEvent(C.BC_INITIALIZED_EVENT);
+    utils.emitEvent(constant.BC_INITIALIZED_EVENT);
   }
 
   async mustBeActive() {
diff --git a/server/web3admin/be/C.js b/server/web3admin/be/constant.js
similarity index 100%
rename from server/web3admin/be/C.js
rename to server/web3admin/be/constant.js