From 9b732c891a97db4c1b7ff11e36f2d40765e4d9d7 Mon Sep 17 00:00:00 2001
From: Craig Nishina <craig.nishina@gmail.com>
Date: Mon, 24 Oct 2016 11:29:01 -0700
Subject: [PATCH] fix(update): fix undefined gecko getBoolean error

closes #107
---
 lib/cmds/update.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/cmds/update.ts b/lib/cmds/update.ts
index 5c2afdcc..d28d1421 100644
--- a/lib/cmds/update.ts
+++ b/lib/cmds/update.ts
@@ -69,7 +69,10 @@ if (argv._[0] === 'update-run') {
 function update(options: Options): void {
   let standalone = options[Opt.STANDALONE].getBoolean();
   let chrome = options[Opt.CHROME].getBoolean();
-  let gecko = options[Opt.GECKO].getBoolean();
+  let gecko = false;
+  if (GeckoDriver.supports(os.type(), os.arch())) {
+    gecko = options[Opt.GECKO].getBoolean();
+  }
   let ie: boolean = false;
   let ie32: boolean = false;
   if (options[Opt.IE]) {