diff --git a/README.md b/README.md
index 06f98b9..5306f5c 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,10 @@ Using -T, collateral paths are relative to the test262 root directory:
 
 `> test262-harness -T ~/test262 language/**/*`
 
+When a glob matches a directory, the default behavior will run all files under it recursively:
+
+`> test262-harness -T ~/test262 language`
+
 Run local tests in jsshell:
 
 `> test262-harness -r jsshell -e jsshell/js -b ./tests`
diff --git a/bin/run.js b/bin/run.js
index 628bc6c..fbb154c 100755
--- a/bin/run.js
+++ b/bin/run.js
@@ -275,12 +275,24 @@ function applyDefaults(config) {
 function getFilesStream(config) {
     var files = config._;
 
-    if(config.test262Dir) {
-        files = files.map(function(p) {
-            return path.join(config.test262Dir, 'test', p);
-        })
+    // by default, run all files recursively when we pass test262Dir
+    if(config.test262Dir && files.length === 0) {
+        files = ['**/*']
     }
 
+    files = files.map(function(p) {
+        if(config.test262Dir) {
+            p = path.join(config.test262Dir, 'test', p);
+        }
+
+        if(fs.existsSync(p) && fs.statSync(p).isDirectory()) {
+            p = path.join(p, '**/*');
+        }
+
+        return p;
+    })
+
+
     files = _(files.map(globStream)).merge();
 
     if (config.exclude) files = files.filter(exclude);
diff --git a/test/test.js b/test/test.js
index d14678e..a480803 100644
--- a/test/test.js
+++ b/test/test.js
@@ -93,17 +93,27 @@ test('compile flag throws without output directory', function(t) {
     });
 });
 
-// test that helpers work when specifying a glob to a test262 folder structure
+// helpers work when specifying a glob to a test262 folder structure
 utils.testResultsCorrect('-r node-ip', 'test/test262alike/test/**/*.js', [
     { file: 'test/test262alike/test/testHelper.js', strictMode: false, pass: true }
 ]);
 
-// test test262Dir - helpers found, and test path relative to test262Dir/test
+// test262Dir - helpers found, and test path relative to test262Dir/test
 utils.testResultsCorrect('-r node-ip --test262Dir test/test262alike', '**/*.js', [
     { file: 'test/test262alike/test/testHelper.js', strictMode: false, pass: true }
 ]);
 
-// test that we can pass a separate helper directory
+// we can pass a separate helper directory
 utils.testResultsCorrect('-r node-ip --test262Dir test/test262alike --includesDir test/test262alike/badHarness', '**/*.js', [
     { file: 'test/test262alike/test/testHelper.js', strictMode: false, pass: false, errorName: 'Error', errorMessage: 'bad' }
 ]);
+
+// We can pass a directory and it will run all files underneath it
+utils.testResultsCorrect('-r node-ip', 'test/test262alike/test', [
+    { file: 'test/test262alike/test/testHelper.js', strictMode: false, pass: true }
+]);
+
+// We can pass test262dir and by default it will run all files under the test directory
+utils.testResultsCorrect('-r node-ip --test262Dir test/test262alike', '', [
+    { file: 'test/test262alike/test/testHelper.js', strictMode: false, pass: true }
+]);
diff --git a/test/utils.js b/test/utils.js
index 9c79fce..6bc8f24 100644
--- a/test/utils.js
+++ b/test/utils.js
@@ -80,8 +80,8 @@ exports.run = function run(args, path, done) {
         path = undefined;
     }
 
-    path = path || 'test/collateral/*.js';
-    console.log("Runing at path " + path);
+    if(path === undefined) path = 'test/collateral/*.js';
+
     args = args.split(" ").concat('--reporter', 'json', path);
 
     var child = cp.fork('bin/run.js', args, {silent: true})