diff --git a/core/lib/isNodeModule.js b/core/lib/isNodeModule.js
new file mode 100644
index 0000000..c379aff
--- /dev/null
+++ b/core/lib/isNodeModule.js
@@ -0,0 +1,13 @@
+'use strict';
+
+var path = require('path');
+var fs = require('fs-extra');
+
+module.exports = function(customPathToApp) {
+    var pathToApp = customPathToApp || global.pathToApp;
+    var grantParentPath = path.join(pathToApp, '../../');
+    var relativePathToApp = path.relative(grantParentPath, pathToApp);
+    var assumedSourceNpmPath = path.join('node_modules', fs.readJsonSync(path.join(pathToApp, 'package.json')).name);
+
+    return relativePathToApp === assumedSourceNpmPath;
+};
\ No newline at end of file
diff --git a/core/postInstall.js b/core/postInstall.js
index 60ecb6f..3a77d05 100644
--- a/core/postInstall.js
+++ b/core/postInstall.js
@@ -3,6 +3,7 @@
 var path = require('path');
 var fs = require('fs-extra');
 var link = require('./lib/createLink');
+var isNodeModule = require('./lib/isNodeModule');
 
 var currentDir = process.env.PWD || __dirname;
 var pathToApp = currentDir.replace(/^\w:\\/, function (match) {
@@ -12,10 +13,9 @@ var pathToApp = currentDir.replace(/^\w:\\/, function (match) {
 var userPath = path.join(pathToApp, '../../');
 
 var internalUserPath = path.join(pathToApp, 'user');
-var parentNodeModules = path.join(pathToApp, '../');
 
 // check if sourcejs is installed as a node_package
-if (path.relative(parentNodeModules, pathToApp) === 'sourcejs') {
+if (isNodeModule(pathToApp)) {
     fs.removeSync(internalUserPath);
     link(userPath, internalUserPath, 'dir');
     console.log('SourceJS User folder symlink created.');