diff --git a/src/jsutils/nodejsCustomInspectSymbol.js b/src/jsutils/nodejsCustomInspectSymbol.js
index e98fece618..1b0aea72ca 100644
--- a/src/jsutils/nodejsCustomInspectSymbol.js
+++ b/src/jsutils/nodejsCustomInspectSymbol.js
@@ -1,7 +1,7 @@
 // @flow strict
 
 const nodejsCustomInspectSymbol =
-  typeof Symbol === 'function'
+  typeof Symbol === 'function' && typeof Symbol.for === 'function'
     ? Symbol.for('nodejs.util.inspect.custom')
     : undefined;