diff --git a/lib/internal/util/inspect.js b/lib/internal/util/inspect.js
index dde2066294590b..8cf7edfac6cbf3 100644
--- a/lib/internal/util/inspect.js
+++ b/lib/internal/util/inspect.js
@@ -116,7 +116,7 @@ const { NativeModule } = require('internal/bootstrap/loaders');
 let hexSlice;
 
 const builtInObjects = new Set(
-  ObjectGetOwnPropertyNames(global).filter((e) => /^([A-Z][a-z]+)+$/.test(e))
+  ObjectGetOwnPropertyNames(global).filter((e) => /^[A-Z][a-zA-Z0-9]+$/.test(e))
 );
 
 const inspectDefaultOptions = ObjectSeal({