diff --git a/src/Twig.php b/src/Twig.php
index e275f66..c4de879 100644
--- a/src/Twig.php
+++ b/src/Twig.php
@@ -118,7 +118,11 @@ private function addPaths(array $paths)
         $loader = new \Twig_Loader_Filesystem();
 
         foreach ($paths as $namespace => $path) {
-            $loader->addPath($path, $namespace);
+            if (is_string($namespace)) {
+                $loader->setPaths($path, $namespace);
+            } else {
+                $loader->addPath($path);
+            }
         }
 
         return $loader;
diff --git a/tests/TwigTest.php b/tests/TwigTest.php
index 296749a..79fcaf9 100644
--- a/tests/TwigTest.php
+++ b/tests/TwigTest.php
@@ -14,26 +14,65 @@
 
 class TwigTest extends \PHPUnit_Framework_TestCase
 {
-    /**
-     * @var Twig
-     */
-    protected $view;
+    public function testFetch()
+    {
+        $view = new Twig(dirname(__FILE__) . '/templates');
+
+        $output = $view->fetch('example.html', [
+            'name' => 'Josh'
+        ]);
 
-    public function setUp()
+        $this->assertEquals("<p>Hi, my name is Josh.</p>\n", $output);
+    }
+
+    public function testSingleNamespaceAndMultipleDirectories()
     {
-        $this->view = new Twig(dirname(__FILE__) . '/templates');
+        $weekday = (new \DateTimeImmutable('2016-03-08'))->format('l');
+
+        $view = new Twig(
+            [
+                'namespace' => [
+                    __DIR__.'/another',
+                    __DIR__.'/templates',
+                    __DIR__.'/multi',
+                ],
+            ]
+        );
+
+        $anotherDirectory = $view->fetch('@namespace/example.html', [
+            'name' => 'Peter'
+        ]);
+
+        $templatesDirectory = $view->fetch('@namespace/another_example.html', [
+            'name'   => 'Peter',
+            'gender' => 'male',
+        ]);
+
+        $outputMulti = $view->fetch('@namespace/directory/template/example.html', [
+            'weekday' => $weekday,
+        ]);
+
+        $this->assertEquals("<p>Hi, my name is Peter.</p>\n", $anotherDirectory);
+        $this->assertEquals("<p>Hi, my name is Peter and I am male.</p>\n", $templatesDirectory);
+        $this->assertEquals('Happy Tuesday!', $outputMulti);
     }
 
-    public function testFetch()
+    public function testArrayWithASingleTemplateWithANamespace()
     {
-        $output = $this->view->fetch('example.html', [
+        $views = new Twig([
+            'One' => [
+                __DIR__.'/templates',
+            ],
+        ]);
+
+        $output = $views->fetch('@One/example.html', [
             'name' => 'Josh'
         ]);
 
         $this->assertEquals("<p>Hi, my name is Josh.</p>\n", $output);
     }
 
-    public function testSingleTemplateWithANamespace()
+    public function testASingleTemplateWithANamespace()
     {
         $views = new Twig([
             'One' => __DIR__.'/templates',
@@ -46,28 +85,57 @@ public function testSingleTemplateWithANamespace()
         $this->assertEquals("<p>Hi, my name is Josh.</p>\n", $output);
     }
 
-    public function testMultipleTemplatesWithMulNamespace()
+    public function testMultipleTemplatesWithMultipleNamespace()
     {
+        $weekday = (new \DateTimeImmutable('2016-03-08'))->format('l');
+
         $views = new Twig([
-            'One' => __DIR__.'/templates',
-            'Two' => __DIR__.'/another',
+            'One'   => __DIR__.'/templates',
+            'Two'   => __DIR__.'/another',
+            'Three' => [
+                __DIR__.'/multi',
+            ],
         ]);
 
         $outputOne = $views->fetch('@One/example.html', [
             'name' => 'Peter'
         ]);
 
-        $outputTwo = $views->fetch('@Two/example.html', [
+        $outputTwo = $views->fetch('@Two/another_example.html', [
             'name'   => 'Peter',
             'gender' => 'male'
         ]);
 
+        $outputThree = $views->fetch('@Three/directory/template/example.html', [
+            'weekday' => $weekday,
+        ]);
+
         $this->assertEquals("<p>Hi, my name is Peter.</p>\n", $outputOne);
         $this->assertEquals("<p>Hi, my name is Peter and I am male.</p>\n", $outputTwo);
+        $this->assertEquals('Happy Tuesday!', $outputThree);
+    }
+
+    public function testMultipleDirectoriesWithoutNamespaces()
+    {
+        $weekday = (new \DateTimeImmutable('2016-03-08'))->format('l');
+        $view    = new Twig([__DIR__.'/multi/', __DIR__.'/another/']);
+
+        $rootDirectory = $view->fetch('directory/template/example.html', [
+            'weekday' => $weekday,
+        ]);
+        $multiDirectory  = $view->fetch('another_example.html', [
+            'name'   => 'Peter',
+            'gender' => 'male',
+        ]);
+
+        $this->assertEquals('Happy Tuesday!', $rootDirectory);
+        $this->assertEquals("<p>Hi, my name is Peter and I am male.</p>\n", $multiDirectory);
     }
 
     public function testRender()
     {
+        $view = new Twig(dirname(__FILE__) . '/templates');
+
         $mockBody = $this->getMockBuilder('Psr\Http\Message\StreamInterface')
             ->disableOriginalConstructor()
             ->getMock();
@@ -85,7 +153,7 @@ public function testRender()
             ->method('getBody')
             ->willReturn($mockBody);
 
-        $response = $this->view->render($mockResponse, 'example.html', [
+        $response = $view->render($mockResponse, 'example.html', [
             'name' => 'Josh'
         ]);
         $this->assertInstanceOf('Psr\Http\Message\ResponseInterface', $response);
diff --git a/tests/another/example.html b/tests/another/another_example.html
similarity index 100%
rename from tests/another/example.html
rename to tests/another/another_example.html
diff --git a/tests/multi/directory/template/example.html b/tests/multi/directory/template/example.html
new file mode 100644
index 0000000..1f1994d
--- /dev/null
+++ b/tests/multi/directory/template/example.html
@@ -0,0 +1 @@
+Happy {{ weekday }}!
\ No newline at end of file