diff --git a/lib/contracts/code_templates/main-context.js.ejs b/lib/contracts/code_templates/main-context.js.ejs
index 53fa09d2..77694c7b 100644
--- a/lib/contracts/code_templates/main-context.js.ejs
+++ b/lib/contracts/code_templates/main-context.js.ejs
@@ -1 +1,5 @@
-var __mainContext = __mainContext || (typeof self !== 'undefined' ? self : this);
+var __mainContext = __mainContext || (
+    typeof this !== 'undefined' ? this : (
+        typeof self !== 'undefined' ? self : void 0
+    )
+);