diff --git a/CHANGELOG.md b/CHANGELOG.md
index 42d4784c..bb7b07b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Fix incompatibility of `multiple` dropdowns with `massiveaction`
 - Fix default value properly applied in multiple dropdown search options
+- Fix `search option` for default values in `multiple` dropdown
 
 ## [1.21.22] - 2025-05-28
 
diff --git a/hook.php b/hook.php
index f6fadaa9..2835d88a 100644
--- a/hook.php
+++ b/hook.php
@@ -390,9 +390,9 @@ function plugin_fields_addWhere($link, $nott, $itemtype, $ID, $val, $searchtype)
         $tablefield = "$table" . '_' . "$field";
         switch ($searchtype) {
             case 'equals':
-                return PluginFieldsDropdown::multipleDropdownAddWhere($link, $tablefield, $field, $val, $nott ? 'notequals' : 'equals');
+                return PluginFieldsDropdown::multipleDropdownAddWhere($link, $tablefield, $field, $val, $nott ? 'notequals' : 'equals', $itemtype, $field_field);
             case 'notequals':
-                return PluginFieldsDropdown::multipleDropdownAddWhere($link, $tablefield, $field, $val, $nott ? 'equals' : 'notequals');
+                return PluginFieldsDropdown::multipleDropdownAddWhere($link, $tablefield, $field, $val, $nott ? 'equals' : 'notequals', $itemtype, $field_field);
         }
     } else {
         // if 'multiple' field with cleaned name is found -> 'dropdown' case
@@ -410,9 +410,9 @@ function plugin_fields_addWhere($link, $nott, $itemtype, $ID, $val, $searchtype)
         ) {
             switch ($searchtype) {
                 case 'equals':
-                    return PluginFieldsDropdown::multipleDropdownAddWhere($link, $tablefield, $field, $val, $nott ? 'notequals' : 'equals');
+                    return PluginFieldsDropdown::multipleDropdownAddWhere($link, $tablefield, $field, $val, $nott ? 'notequals' : 'equals', $itemtype, $field_field);
                 case 'notequals':
-                    return PluginFieldsDropdown::multipleDropdownAddWhere($link, $tablefield, $field, $val, $nott ? 'equals' : 'notequals');
+                    return PluginFieldsDropdown::multipleDropdownAddWhere($link, $tablefield, $field, $val, $nott ? 'equals' : 'notequals', $itemtype, $field_field);
             }
         } else {
             return false;
diff --git a/inc/dropdown.class.php b/inc/dropdown.class.php
index 727c6d09..926b670a 100644
--- a/inc/dropdown.class.php
+++ b/inc/dropdown.class.php
@@ -255,16 +255,32 @@ public static function getClassname($system_name)
         return 'PluginFields' . ucfirst($system_name) . 'Dropdown';
     }
 
-    public static function multipleDropdownAddWhere($link, $tablefield, $field, $val, $searchtype)
+    public static function multipleDropdownAddWhere($link, $tablefield, $field, $val, $searchtype, $itemtype, $field_field)
     {
         /** @var \DBmysql $DB */
         global $DB;
 
+        $default_value_request = "";
+
+        if ($field_field->fields['default_value'] === '["' . $val . '"]') {
+            switch ($searchtype) {
+                case 'equals':
+                    $default_value_request = ' OR (' . $link . $DB->quoteName($tablefield) . '.' . $DB->quoteName('itemtype') . ' IS NULL' .
+                    ' AND ' . $link . $DB->quoteName($tablefield) . '.' . $DB->quoteName('items_id') . ' IS NULL)';
+                    break;
+                case 'notequals':
+                    $default_value_request = ' AND (' . $link . $DB->quoteName($tablefield) . '.' . $DB->quoteName('itemtype') . '=' . $DB->quoteValue($itemtype) .
+                    ' OR ' . $link . $DB->quoteName($tablefield) . '.' . $DB->quoteName('items_id') . '=' . $itemtype::getTable() . '.id)';
+                    break;
+            }
+        }
+
         switch ($searchtype) {
             case 'equals':
-                return $link . $DB->quoteName($tablefield) . '.' . $DB->quoteName($field) . 'LIKE ' . $DB->quoteValue("%\"$val\"%") ;
+                return $link . $DB->quoteName($tablefield) . '.' . $DB->quoteName($field) . ' LIKE ' . $DB->quoteValue("%\"$val\"%") . $default_value_request;
             case 'notequals':
-                return $link . $DB->quoteName($tablefield) . '.' . $DB->quoteName($field) . 'NOT LIKE ' . $DB->quoteValue("%\"$val\"%") . ' OR ' . $link . $DB->quoteName($tablefield) . '.' . $DB->quoteName($field) . 'IS NULL ';
+                return $link . $DB->quoteName($tablefield) . '.' . $DB->quoteName($field) . ' NOT LIKE ' . $DB->quoteValue("%\"$val\"%") .
+                ' OR ' . $link . $DB->quoteName($tablefield) . '.' . $DB->quoteName($field) . ' IS NULL' . $default_value_request;
         }
     }
 }