diff --git a/packager.js b/packager.js
index 26917237..ce4dbd25 100644
--- a/packager.js
+++ b/packager.js
@@ -38,7 +38,12 @@ if (options.projectRoots) {
     options.projectRoots = options.projectRoots.split(',');
   }
 } else {
-  options.projectRoots = [path.resolve(__dirname, '..')];
+  if (__dirname.match(/node_modules\/react-native\/packager$/)) {
+    // packager is running from node_modules of another project
+    options.projectRoots = [path.resolve(__dirname, '../../..')];
+  } else {
+    options.projectRoots = [path.resolve(__dirname, '..')];
+  }
 }
 
 if (options.root) {