From 041277ccaebd6de69624e4e501e97b3d0ae391a5 Mon Sep 17 00:00:00 2001
From: Zack Stickles <zstickles@gmail.com>
Date: Wed, 23 Sep 2020 10:43:57 -0700
Subject: [PATCH] fix: only reference mktoForms2 when available

---
 gatsby-browser.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/gatsby-browser.js b/gatsby-browser.js
index 68fcc6cd9..54dca922a 100644
--- a/gatsby-browser.js
+++ b/gatsby-browser.js
@@ -41,10 +41,12 @@ const onInitialClientRender = () => {
     }
   }
 
-  // eslint-disable-next-line no-undef
-  MktoForms2.whenRendered(function (form) {
-    destyleMktoForm(form);
-  });
+  if (typeof window !== 'undefined' && window.MktoForms2) {
+    // eslint-disable-next-line no-undef
+    MktoForms2.whenRendered(function (form) {
+      destyleMktoForm(form);
+    });
+  }
 };
 
 const onRouteUpdate = ({ location }) => {