X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FApp.php;h=97c193b3b7f4937ec68fe62fc390dd1787ba04d2;hb=f303f9edf2dd9943d07e6507006f61ca2abadaa5;hp=968f07b0c40cfed35247527b0cc7a3d4e810ff52;hpb=2c541afd47f775c92c4050fb1f04a17187167f8f;p=friendica.git

diff --git a/src/App.php b/src/App.php
index 968f07b0c4..97c193b3b7 100644
--- a/src/App.php
+++ b/src/App.php
@@ -327,7 +327,7 @@ class App
 		$this->is_mobile = $mobile_detect->isMobile();
 		$this->is_tablet = $mobile_detect->isTablet();
 
-		$this->isAjax = strtolower(defaults($_SERVER, 'HTTP_X_REQUESTED_WITH')) == 'xmlhttprequest';
+		$this->isAjax = strtolower(defaults($_SERVER, 'HTTP_X_REQUESTED_WITH', '')) == 'xmlhttprequest';
 
 		// Register template engines
 		$this->registerTemplateEngine('Friendica\Render\FriendicaSmartyEngine');