diff --git a/lib/modules/deployment/contract_deployer.js b/lib/modules/deployment/contract_deployer.js
index c421597b..384ecf7a 100644
--- a/lib/modules/deployment/contract_deployer.js
+++ b/lib/modules/deployment/contract_deployer.js
@@ -257,7 +257,7 @@ class ContractDeployer {
             if (err) {
               return next(err);
             }
-            let increase_per = 1 + (Math.random() / 10.0)
+            let increase_per = 1 + (Math.random() / 10.0);
             contract.gas = Math.floor(gasValue * increase_per);
             next();
           });