diff --git a/lib/internal/worker.js b/lib/internal/worker.js
index 53e3c7668c31a0..796d1713dd510a 100644
--- a/lib/internal/worker.js
+++ b/lib/internal/worker.js
@@ -68,11 +68,7 @@ class Worker extends EventEmitter {
                                      options.execArgv);
     }
     if (!options.eval) {
-      if (!path.isAbsolute(filename) &&
-          !filename.startsWith('./') &&
-          !filename.startsWith('../') &&
-          !filename.startsWith('.' + path.sep) &&
-          !filename.startsWith('..' + path.sep)) {
+      if (!path.isAbsolute(filename) && !/^\.\.?[\\/]/.test(filename)) {
         throw new ERR_WORKER_PATH(filename);
       }
       filename = path.resolve(filename);