diff --git a/system/src/Grav/Common/Grav.php b/system/src/Grav/Common/Grav.php
index e9aceffef..ba67052ff 100644
--- a/system/src/Grav/Common/Grav.php
+++ b/system/src/Grav/Common/Grav.php
@@ -455,7 +455,7 @@ class Grav extends Container
 
             if ($extension) {
                 $download = true;
-                if (in_array(ltrim($extension, '.'), $this['config']->get('system.media.unsupported_inline_types'))) {
+                if (in_array(ltrim($extension, '.'), $this['config']->get('system.media.unsupported_inline_types', []))) {
                     $download = false;
                 }
                 Utils::download($page->path() . DIRECTORY_SEPARATOR . $uri->basename(), $download);