diff --git a/src/babel/api/register/node.js b/src/babel/api/register/node.js
index b601dd880f..fad96782d7 100644
--- a/src/babel/api/register/node.js
+++ b/src/babel/api/register/node.js
@@ -77,8 +77,7 @@ var compile = function (filename) {
 };
 
 var shouldIgnore = function (filename) {
-  filename = slash(filename);
-  return (ignoreRegex && ignoreRegex.test(filename)) || (onlyRegex && !onlyRegex.test(filename));
+  return util.shouldIgnore(filename, ignoreRegex || [], onlyRegex || []);
 };
 
 var istanbulMonkey = {};
@@ -144,8 +143,8 @@ var hookExtensions = function (_exts) {
 hookExtensions(util.canCompile.EXTENSIONS);
 
 export default function (opts = {}) {
-  if (opts.only != null) onlyRegex = util.regexify(opts.only);
-  if (opts.ignore != null) ignoreRegex = util.regexify(opts.ignore);
+  if (opts.only != null) onlyRegex = util.arrayify(opts.only, util.regexify);
+  if (opts.ignore != null) ignoreRegex = util.arrayify(opts.ignore, util.regexify);
 
   if (opts.extensions) hookExtensions(util.arrayify(opts.extensions));