diff --git a/src/wp-admin/includes/screen.php b/src/wp-admin/includes/screen.php
index 1e57622003..c3c4594d93 100644
--- a/src/wp-admin/includes/screen.php
+++ b/src/wp-admin/includes/screen.php
@@ -120,7 +120,7 @@ function meta_box_prefs( $screen ) {
 
 				$widget_title = $box['title'];
 
-				if ( isset( $box['args']['__widget_basename'] ) ) {
+				if ( is_array( $box['args'] ) && isset( $box['args']['__widget_basename'] ) ) {
 					$widget_title = $box['args']['__widget_basename'];
 				}