diff --git a/node_title_validation.install b/node_title_validation.install
index a6c7917..bc11f98 100644
--- a/node_title_validation.install
+++ b/node_title_validation.install
@@ -5,10 +5,21 @@
  * Node title validation install.
  */
 
+/**
+ * Converts node_title_validation_config config entity to node_title_validation.
+ */
+function node_title_validation_update_8001() {
+  $old_config = \Drupal::configFactory()->getEditable('node_title_validation_config.node_title_validation_settings');
+  $new_config = \Drupal::configFactory()->getEditable('node_title_validation.node_title_validation_settings');
+  $new_config->set('node_title_validation_config', $old_config->get('node_title_validation_config'));
+  $new_config->save();
+  $old_config->delete();
+}
+
 /*
  * Implements hook_uninstall().
  */
 function node_title_validation_uninstall() {
   // Deleting the validation settings while uninstalling the module.
-  \Drupal::configFactory()->getEditable('node_title_validation_config.node_title_validation_settings')->delete();
+  \Drupal::configFactory()->getEditable('node_title_validation.node_title_validation_settings')->delete();
 }
diff --git a/src/Form/NodeTitleValidationAdminForm.php b/src/Form/NodeTitleValidationAdminForm.php
index 977aae4..a63a4ac 100644
--- a/src/Form/NodeTitleValidationAdminForm.php
+++ b/src/Form/NodeTitleValidationAdminForm.php
@@ -19,7 +19,7 @@ class NodeTitleValidationAdminForm extends FormBase {
   public function buildForm(array $form, FormStateInterface $form_state) {
 
     // Get configuration value.
-    $node_title_validation_config = \Drupal::config('node_title_validation_config.node_title_validation_settings')
+    $node_title_validation_config = \Drupal::config('node_title_validation.node_title_validation_settings')
       ->get('node_title_validation_config');
 
     // Get available content types.
@@ -198,7 +198,7 @@ class NodeTitleValidationAdminForm extends FormBase {
 
     // Set node_title_validation_config variable.
     \Drupal::configFactory()
-      ->getEditable('node_title_validation_config.node_title_validation_settings')
+      ->getEditable('node_title_validation.node_title_validation_settings')
       ->set('node_title_validation_config', $values)
       ->save();
 
diff --git a/src/Plugin/Validation/Constraint/NodeTitleConstraintValidator.php b/src/Plugin/Validation/Constraint/NodeTitleConstraintValidator.php
index 8eaf624..9d52ba1 100644
--- a/src/Plugin/Validation/Constraint/NodeTitleConstraintValidator.php
+++ b/src/Plugin/Validation/Constraint/NodeTitleConstraintValidator.php
@@ -27,7 +27,7 @@ class NodeTitleConstraintValidator extends ConstraintValidator {
       $node_url_array = explode("node/add/", $url->toString());
       $node_type = $node_url_array[1];
     }
-    $node_title_validation_config = \Drupal::config('node_title_validation_config.node_title_validation_settings')
+    $node_title_validation_config = \Drupal::config('node_title_validation.node_title_validation_settings')
       ->get('node_title_validation_config');
     if ($node_title_validation_config) {
       // Add a comma if comma is blacklist.