diff --git a/lib/monitor/run.js b/lib/monitor/run.js
index a0d07124..06e39eb1 100644
--- a/lib/monitor/run.js
+++ b/lib/monitor/run.js
@@ -40,8 +40,8 @@ function run(options) {
     stdio = [process.stdin, process.stdout, process.stderr];
   }
 
-  const sh = 'sh';
-  const shFlag = '-c';
+  var sh = 'sh';
+  var shFlag = '-c';
 
   const binPath = process.cwd() + '/node_modules/.bin';