diff --git a/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/FieldInstancePerViewMode.php b/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/FieldInstancePerViewMode.php
index 060c055..8912788 100644
--- a/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/FieldInstancePerViewMode.php
+++ b/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/FieldInstancePerViewMode.php
@@ -31,7 +31,7 @@ protected function runQuery() {
       $field_name = $field_row['field_name'];
 
       foreach ($this->getViewModes() as $view_mode) {
-        if (isset($field_row['display_settings'][$view_mode]) && !$field_row['display_settings'][$view_mode]['exclude']) {
+        if (isset($field_row['display_settings'][$view_mode]) && isset($field_row['display_settings'][$view_mode]['exclude']) && !$field_row['display_settings'][$view_mode]['exclude']) {
           $index = $view_mode . "." . $bundle . "." . $field_name;
           $rows[$index]['entity_type'] = 'node';
           $rows[$index]['view_mode'] = $view_mode;
diff --git a/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/ViewMode.php b/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/ViewMode.php
index d57c5a4..0f1025d 100644
--- a/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/ViewMode.php
+++ b/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/ViewMode.php
@@ -26,7 +26,7 @@ protected function runQuery() {
     while ($field_row = $result->fetchAssoc()) {
       $field_row['display_settings'] = unserialize($field_row['display_settings']);
       foreach ($this->getViewModes() as $view_mode) {
-        if (isset($field_row['display_settings'][$view_mode]) && (!isset($field_row['display_settings'][$view_mode]['exclude']) || !$field_row['display_settings'][$view_mode]['exclude'])) {
+        if (isset($field_row['display_settings'][$view_mode]) && isset($field_row['display_settings'][$view_mode]['exclude']) && !$field_row['display_settings'][$view_mode]['exclude']) {
           if (!isset($rows[$view_mode])) {
             $rows[$view_mode]['entity_type'] = 'node';
             $rows[$view_mode]['view_mode'] = $view_mode;
diff --git a/core/modules/migrate_drupal/src/Tests/Dump/Drupal6FieldInstance.php b/core/modules/migrate_drupal/src/Tests/Dump/Drupal6FieldInstance.php
index 7bf45c3..acba4dc 100644
--- a/core/modules/migrate_drupal/src/Tests/Dump/Drupal6FieldInstance.php
+++ b/core/modules/migrate_drupal/src/Tests/Dump/Drupal6FieldInstance.php
@@ -854,6 +854,47 @@ public function load() {
       )),
       'description' => 'An example integer field.',
     ))
+    ->values(array(
+      'field_name' => 'field_test_exclude',
+      'type_name' => 'story',
+      'weight' => 1,
+      'label' => 'Text Field',
+      'widget_type' => 'text_textfield',
+      'widget_settings' => serialize(array(
+        'rows' => 5,
+        'size' => '60',
+        'default_value' => array(
+          0 => array(
+            'value' => 'text for default value',
+            '_error_element' => 'default_value_widget][field_test][0][value',
+          ),
+        ),
+        'default_value_php' => NULL,
+      )),
+      'display_settings' => serialize(array(
+        'weight' => 1,
+        'parent' => '',
+        'label' => array(
+          'format' => 'above',
+        ),
+        1 => array(
+          'format' => 'default',
+        ),
+        'teaser' => array(
+          'format' => 'trimmed',
+        ),
+        'full' => array(
+          'format' => 'default',
+        ),
+        4 => array(
+          'format' => 'trimmed',
+        ),
+        5 => array(
+          'format' => 'default',
+        ),
+      )),
+      'description' => 'An example text field without exclude.',
+    ))
     ->execute();
 
     // Create the field table.