diff --git a/Herbert/Framework/Providers/HerbertServiceProvider.php b/Herbert/Framework/Providers/HerbertServiceProvider.php
index 6bb5826..2804446 100644
--- a/Herbert/Framework/Providers/HerbertServiceProvider.php
+++ b/Herbert/Framework/Providers/HerbertServiceProvider.php
@@ -128,16 +128,26 @@ protected function registerEloquent()
 
         $capsule = new Capsule($this->app);
 
-        $capsule->addConnection([
-            'driver' => 'mysql',
-            'host' => DB_HOST,
-            'database' => DB_NAME,
-            'username' => DB_USER,
-            'password' => DB_PASSWORD,
-            'charset' => DB_CHARSET,
-            'collation' => DB_COLLATE ?: $wpdb->collate,
-            'prefix' => $wpdb->prefix
-        ]);
+        if (defined('WP_MUFFIN') && WP_MUFFIN) {
+            $capsule->addConnection([
+                'driver'   => 'sqlite',
+                'database' => ':memory:',
+                'charset' => DB_CHARSET,
+                'collation' => DB_COLLATE ?: $wpdb->collate,
+                'prefix'   => $wpdb->prefix
+            ]);
+        } else {
+            $capsule->addConnection([
+                'driver' => 'mysql',
+                'host' => DB_HOST,
+                'database' => DB_NAME,
+                'username' => DB_USER,
+                'password' => DB_PASSWORD,
+                'charset' => DB_CHARSET,
+                'collation' => DB_COLLATE ?: $wpdb->collate,
+                'prefix' => $wpdb->prefix
+            ]);
+        }
 
         $capsule->setAsGlobal();
         $capsule->bootEloquent();
diff --git a/Herbert/Framework/Providers/TwigServiceProvider.php b/Herbert/Framework/Providers/TwigServiceProvider.php
index beb4afb..cce2573 100644
--- a/Herbert/Framework/Providers/TwigServiceProvider.php
+++ b/Herbert/Framework/Providers/TwigServiceProvider.php
@@ -20,7 +20,7 @@ public function register()
     {
         $this->app->singleton('twig.loader', function ()
         {
-            $loader = new Twig_Loader_Filesystem('/');
+            $loader = new Twig_Loader_Filesystem();
 
             foreach ($this->app->getPlugins() as $plugin)
             {
diff --git a/Herbert/Framework/Shortcode.php b/Herbert/Framework/Shortcode.php
index 4e99072..25b65b4 100644
--- a/Herbert/Framework/Shortcode.php
+++ b/Herbert/Framework/Shortcode.php
@@ -41,7 +41,7 @@ public function add($name, $callable, $arguments = [])
                 $attributes = $this->renameArguments($arguments, $attributes);
             }
 
-            if (strpos($callable, '::') !== false)
+            if (is_string($callable) && strpos($callable, '::') !== false)
             {
                 list($api, $method) = explode('::', $callable);