diff --git a/system/src/Grav/Common/Page/Markdown/Excerpts.php b/system/src/Grav/Common/Page/Markdown/Excerpts.php
index 1a366027b..3317217c7 100644
--- a/system/src/Grav/Common/Page/Markdown/Excerpts.php
+++ b/system/src/Grav/Common/Page/Markdown/Excerpts.php
@@ -278,10 +278,10 @@ class Excerpts
             );
         }
 
-        $defaults = $config['images']['defaults'] ?? [];
+        $defaults = $this->config['images']['defaults'] ?? [];
         if (count($defaults)) {
             foreach ($defaults as $method => $params) {
-                if (!array_search($method, array_column($actions, 'method'))) {
+                if (array_search($method, array_column($actions, 'method')) === false) {
                     $actions[] = [
                         'method' => $method,
                         'params' => $params,