diff --git a/modules/ckeditor5_plugin_pack_word_count/src/Plugin/CKEditor5Plugin/WordCount.php b/modules/ckeditor5_plugin_pack_word_count/src/Plugin/CKEditor5Plugin/WordCount.php
index 585c046..5137707 100644
--- a/modules/ckeditor5_plugin_pack_word_count/src/Plugin/CKEditor5Plugin/WordCount.php
+++ b/modules/ckeditor5_plugin_pack_word_count/src/Plugin/CKEditor5Plugin/WordCount.php
@@ -85,9 +85,12 @@ class WordCount extends CKEditor5PluginDefault implements CKEditor5PluginConfigu
   /**
    * {@inheritdoc}
    */
-  public function submitConfigurationForm(array &$form, FormStateInterface $form_state): void {
-    $this->setConfiguration($form_state->cleanValues()->getValues());
-  }
+    public function submitConfigurationForm(array &$form, FormStateInterface $form_state): void {
+      $values = $form_state->cleanValues()->getValues();
+
+      $values['word_count_enabled'] = isset($values['word_count_enabled']) ? !empty($values['word_count_enabled']) : FALSE;
+      $this->setConfiguration($values);
+    }
 
   /**
    * {@inheritdoc}