diff --git a/lib/rsk-utils-legacy.js b/lib/rsk-utils-legacy.js
index ea78023b..7c7d33b5 100644
--- a/lib/rsk-utils-legacy.js
+++ b/lib/rsk-utils-legacy.js
@@ -2,7 +2,7 @@ const expect = require('chai').expect;
 const btcClientProvider = require('./btc-client-provider');
 const { sequentialPromise, wait, interval } = require('./utils');
 const { getBridgeAbi, getLatestActiveForkName } = require('./precompiled-abi-forks-util');
-const waitForBlockAttemptTimeMillis = process.env.WAIT_FOR_BLOCK_ATTEMPT_TIME_MILLIS || 200
+const waitForBlockAttemptTimeMillis = process.env.WAIT_FOR_BLOCK_ATTEMPT_TIME_MILLIS || 200;
 const waitForBlockMaxAttempts = process.env. WAIT_FOR_BLOCK_MAX_ATTEMPTS || 160;
 
 var getMaxBlockNumber = (rskClients) => {