diff --git a/src/Brabijan/Images/Macros/Latte.php b/src/Brabijan/Images/Macros/Latte.php
index 5b387e4..39c8a7a 100644
--- a/src/Brabijan/Images/Macros/Latte.php
+++ b/src/Brabijan/Images/Macros/Latte.php
@@ -136,7 +136,7 @@ public function finalize()
 	 */
 	public static function validateTemplateParams($template)
 	{
-        if (!($template instanceof \Latte\Runtime\Template) || !($template instanceof \Nette\Application\UI\Template)) {
+        if (!($template instanceof \Latte\Runtime\Template) && !($template instanceof \Nette\Application\UI\Template)) {
             throw new \InvalidArgumentException('$template has to be instance of LR\Template or Nette\Templating\Template, instance of ' . get_class($template) . ' given.');
         }