diff --git a/application/third_party/MX/Router.php b/application/third_party/MX/Router.php
index 58e09a0..de401a9 100755
--- a/application/third_party/MX/Router.php
+++ b/application/third_party/MX/Router.php
@@ -236,10 +236,12 @@ protected function _set_module_path(&$_route)
 	public function set_class($class)
 	{
 		$suffix = $this->config->item('controller_suffix');
-		if (strpos($class, $suffix) === FALSE)
+
+		if (!empty($suffix) && strpos($class, $suffix) === FALSE)
 		{
 			$class .= $suffix;
 		}
+
 		parent::set_class($class);
 	}
-}
\ No newline at end of file
+}