diff --git a/src/Form/SettingsForm.php b/src/Form/SettingsForm.php
index e2cb09d..6df0304 100644
--- a/src/Form/SettingsForm.php
+++ b/src/Form/SettingsForm.php
@@ -98,7 +98,7 @@ class SettingsForm extends ConfigFormBase {
       }
       else {
         if (array_key_exists($export_type, $disabled_engines)) {
-          $disabled_engines[$export_type] = array($plugin_id => $definition['label']);
+          $disabled_engines[$export_type][] = array($plugin_id => $definition['label']);
         }
         else {
           $disabled_engines[$export_type][$plugin_id] = $definition['label'];
@@ -133,11 +133,12 @@ class SettingsForm extends ConfigFormBase {
       '#default_value' => $config->get('force_download'),
     ];
 
+    // @TODO, allow other print engines to be configured.
     $form['entity_print']['pdf_engine'] = [
       '#type' => 'select',
       '#title' => $this->t('PDF Engine'),
       '#description' => $this->t('Select the PDF engine to render the Print'),
-      '#options' => $print_engines['pdf'],
+      '#options' => !empty($print_engines['pdf']) ? $print_engines['pdf'] : [],
       '#default_value' => $config->get('print_engines.pdf_engine'),
       '#empty_option' => $this->t('- None -'),
       '#ajax' => [
@@ -158,7 +159,8 @@ class SettingsForm extends ConfigFormBase {
 
     // If we have a plugin id and the plugin hasn't since been disabled then we
     // load the config for the plugin.
-    if ($pdf_plugin_id && !in_array($pdf_plugin_id, array_keys($disabled_engines), TRUE)) {
+    // @TODO, support all print engine types.
+    if ($pdf_plugin_id && !in_array($pdf_plugin_id, array_keys($disabled_engines['pdf']), TRUE)) {
       $form['entity_print']['pdf_engine_config'][$pdf_plugin_id] = $this->getPluginForm($pdf_plugin_id, $form_state);
     }
 
diff --git a/src/Plugin/EntityPrint/PrintEngine/DomPdf.php b/src/Plugin/EntityPrint/PrintEngine/DomPdf.php
index 6c99a61..c5267b4 100644
--- a/src/Plugin/EntityPrint/PrintEngine/DomPdf.php
+++ b/src/Plugin/EntityPrint/PrintEngine/DomPdf.php
@@ -158,6 +158,7 @@ class DomPdf extends PrintEngineBase implements ContainerFactoryPluginInterface
    * {@inheritdoc}
    */
   public static function dependenciesAvailable() {
+    return false;
     return class_exists('Dompdf\Dompdf');
   }
 
diff --git a/src/Tests/EntityPrintAdminTest.php b/src/Tests/EntityPrintAdminTest.php
index 3d14a7c..1cbf715 100644
--- a/src/Tests/EntityPrintAdminTest.php
+++ b/src/Tests/EntityPrintAdminTest.php
@@ -58,7 +58,7 @@ class EntityPrintAdminTest extends WebTestBase {
     $this->assertNoText('Dompdf Settings');
 
     // Make sure we also get a warning telling us to install it.
-    $this->assertText('Dompdf is not available because it is not configured. Please install using composer.');
+    $this->assertText('Dompdf is not available because it is not configured. Please install with:');
 
     // Ensure saving the form without any PDF engine selected doesn't blow up.
     $this->drupalPostForm(NULL, [], 'Save configuration');
@@ -82,7 +82,7 @@ class EntityPrintAdminTest extends WebTestBase {
     ], 'Save configuration');
 
     /** @var \Drupal\entity_print\Entity\PrintEngineInterface $config_entity */
-    $config_entity = \Drupal::entityTypeManager()->getStorage('pdf_engine')->load('testprintengine');
+    $config_entity = \Drupal::entityTypeManager()->getStorage('print_engine')->load('testprintengine');
 
     // Assert the expected settings were stored.
     $this->assertEqual('testprintengine', $config_entity->id());
diff --git a/tests/modules/entity_print_test/src/Plugin/EntityPrint/PrintEngine/TestPrintEngine.php b/tests/modules/entity_print_test/src/Plugin/EntityPrint/PrintEngine/TestPrintEngine.php
index 68dda16..bff1322 100644
--- a/tests/modules/entity_print_test/src/Plugin/EntityPrint/PrintEngine/TestPrintEngine.php
+++ b/tests/modules/entity_print_test/src/Plugin/EntityPrint/PrintEngine/TestPrintEngine.php
@@ -32,7 +32,7 @@ class TestPrintEngine extends PrintEngineBase {
    */
   public function send($filename = NULL) {
     // Echo the response and then flush, just like a Prin implementation would.
-    echo 'Using testprinengine - ' . $this->configuration['test_engine_suffix'];
+    echo 'Using testprintengine - ' . $this->configuration['test_engine_suffix'];
     echo $this->html;
     flush();
   }