diff --git a/core/modules/field/src/Plugin/migrate/source/d6/FieldInstancePerViewMode.php b/core/modules/field/src/Plugin/migrate/source/d6/FieldInstancePerViewMode.php
index 2e1832e1b0..a4f952484f 100644
--- a/core/modules/field/src/Plugin/migrate/source/d6/FieldInstancePerViewMode.php
+++ b/core/modules/field/src/Plugin/migrate/source/d6/FieldInstancePerViewMode.php
@@ -28,7 +28,7 @@ protected function initializeIterator() {
       $field_name = $field_row['field_name'];
 
       foreach ($this->getViewModes() as $view_mode) {
-        if (isset($field_row['display_settings'][$view_mode]) && empty($field_row['display_settings'][$view_mode]['exclude'])) {
+        if (!empty($field_row['display_settings'][$view_mode]) && empty($field_row['display_settings'][$view_mode]['exclude'])) {
           $index = $view_mode . "." . $bundle . "." . $field_name;
           $rows[$index]['entity_type'] = 'node';
           $rows[$index]['view_mode'] = $view_mode;