diff --git a/blacklist.js b/blacklist.js
index af2e2879..237691a8 100644
--- a/blacklist.js
+++ b/blacklist.js
@@ -8,6 +8,8 @@
  */
 'use strict';
 
+var path = require('path');
+
 // Don't forget to everything listed here to `testConfig.json`
 // modulePathIgnorePatterns.
 var sharedBlacklist = [
@@ -39,7 +41,9 @@ var platformBlacklists = {
 };
 
 function escapeRegExp(str) {
-  return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&');
+  var escaped = str.replace(/[\-\[\]\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&');
+  // convert the '/' into an escaped local file separator
+  return escaped.replace(/\//g,'\\' + path.sep);
 }
 
 function blacklist(platform, additionalBlacklist) {
diff --git a/packager.js b/packager.js
index d179617c..ff0faa31 100644
--- a/packager.js
+++ b/packager.js
@@ -69,8 +69,9 @@ if (options.projectRoots) {
     options.projectRoots = options.projectRoots.split(',');
   }
 } else {
-  if (__dirname.match(/node_modules\/react-native\/packager$/)) {
-    // packager is running from node_modules of another project
+  // match on either path separator
+  if (__dirname.match(/node_modules[\/\\]react-native[\/\\]packager$/)) {
+     // packager is running from node_modules of another project
     options.projectRoots = [path.resolve(__dirname, '../../..')];
   } else if (__dirname.match(/Pods\/React\/packager$/)) {
     // packager is running from node_modules of another project
@@ -97,7 +98,8 @@ if (options.assetRoots) {
     });
   }
 } else {
-  if (__dirname.match(/node_modules\/react-native\/packager$/)) {
+  // match on either path separator
+  if (__dirname.match(/node_modules[\/\\]react-native[\/\\]packager$/)) {
     options.assetRoots = [path.resolve(__dirname, '../../..')];
   } else if (__dirname.match(/Pods\/React\/packager$/)) {
     options.assetRoots = [path.resolve(__dirname, '../../..')];