diff --git a/core/modules/image/image.install b/core/modules/image/image.install
index b0141c0..db888fc 100644
--- a/core/modules/image/image.install
+++ b/core/modules/image/image.install
@@ -199,28 +199,32 @@ function image_update_8003() {
   $field_uuids = array();
 
   foreach (config_get_storage_names_with_prefix('field.field.') as $config_name) {
-    $field_config = config($config_name)->get();
-    if ($field_config['type'] == 'image') {
-      $field_uuids[] = $field_config['uuid'];
-      if (!empty($field_config['settings']['default_image'])) {
-        $field_config['settings']['default_image'] = array($field_config['settings']['default_image']);
+    $field_config = config($config_name);
+    if ($field_config->get('type') == 'image') {
+      $field_uuids[] = $field_config->get('uuid');
+      $settings = $field_config->get('settings');
+      if (!empty($settings['default_image'])) {
+        $settings['default_image'] = array($settings['default_image']);
       }
       else {
-        $field_config['settings']['default_image'] = array();
+        $settings['default_image'] = array();
       }
+      $field_config->set('settings', $settings);
       $field_config->save();
     }
   }
 
   foreach (config_get_storage_names_with_prefix('field.instance.') as $config_name) {
-    $instance_config = config($config_name)->get();
-    if (in_array($instance_config['field_uuid'], $field_uuids)) {
-      if (!empty($instance_config['settings']['default_image'])) {
-        $instance_config['settings']['default_image'] = array($instance_config['settings']['default_image']);
+    $instance_config = config($config_name);
+    if (in_array($instance_config->get('field_uuid'), $field_uuids)) {
+      $settings = $instance_config->get('settings');
+      if (!empty($settings['default_image'])) {
+        $settings['default_image'] = array($settings['default_image']);
       }
       else {
-        $instance_config['settings']['default_image'] = array();
+        $settings['default_image'] = array();
       }
+      $instance_config->set('settings', $settings);
       $instance_config->save();
     }
   }