diff --git a/app/Item.php b/app/Item.php
index ab54c75c..6152f9a4 100644
--- a/app/Item.php
+++ b/app/Item.php
@@ -169,7 +169,7 @@ class Item extends Model
 
     public static function isEnhanced($class)
     {
-        if ($class === null || $class === 'null') {
+        if (!class_exists($class) || $class === null || $class === 'null') {
             return false;
         }
         $app = new $class;
@@ -179,6 +179,9 @@ class Item extends Model
 
     public static function isSearchProvider($class)
     {
+        if (!class_exists($class) || $class === null || $class === 'null') {
+            return false;
+        }
         $app = new $class;
 
         return ((bool) ($app instanceof \App\SearchInterface)) ? $app : false;