diff --git a/src/config.js b/src/config.js
index ea50fb122..6018c5dc0 100644
--- a/src/config.js
+++ b/src/config.js
@@ -3,7 +3,6 @@
 /*
  * decaffeinate suggestions:
  * DS101: Remove unnecessary use of Array.from
- * DS103: Rewrite code to no longer use __guard__
  * DS207: Consider shorter variations of null checks
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
@@ -1602,7 +1601,3 @@ var withoutEmptyObjects = function (object) {
   }
   return resultObject
 }
-
-function __guard__ (value, transform) {
-  return (typeof value !== 'undefined' && value !== null) ? transform(value) : undefined
-}