diff --git a/src/Controller/OAuth.php b/src/Controller/OAuth.php
index ec99bad..a9cab1e 100644
--- a/src/Controller/OAuth.php
+++ b/src/Controller/OAuth.php
@@ -33,7 +33,7 @@ class OAuth extends ControllerBase {
   protected $messenger;
 
   /**
-   * Constructs a MyController object
+   * Constructs an OAuth object.
    *
    * @param \Drupal\hubspot_api\Services\OAuth $oauth_service
    *   The OAuth service.
@@ -68,7 +68,7 @@ class OAuth extends ControllerBase {
    * @return \Symfony\Component\HttpFoundation\RedirectResponse
    */
   public function oauthRedirect() {
-    if (!isset($_GET['error']) && $_GET['error'] == 'access_denied') {
+    if (isset($_GET['error']) && $_GET['error'] == 'access_denied') {
       // Show error message if access was denied.
       $this->messenger->addError($this->t('Access was denied to HubSpot API.'));
     }
diff --git a/src/Form/SettingsForm.php b/src/Form/SettingsForm.php
index 54631ba..cef489a 100755
--- a/src/Form/SettingsForm.php
+++ b/src/Form/SettingsForm.php
@@ -55,49 +55,49 @@ class SettingsForm extends ConfigFormBase {
 
     $form['client_id'] = [
       '#type' => 'textfield',
-      '#title' => t('Client ID'),
+      '#title' => $this->t('Client ID'),
       '#required' => TRUE,
       '#default_value' => $config->get('client_id'),
     ];
     $form['client_secret'] = [
       '#type' => 'textfield',
-      '#title' => t('Client secret'),
+      '#title' => $this->t('Client secret'),
       '#required' => TRUE,
       '#default_value' => $config->get('client_secret'),
     ];
     $form['oauth'] = [
       '#type' => 'fieldset',
-      '#title' => t('OAuth connection'),
+      '#title' => $this->t('OAuth connection'),
     ];
     $form['oauth']['tokens'] = [
       '#type' => 'details',
-      '#title' => t('Tokens'),
+      '#title' => $this->t('Tokens'),
       '#open' => TRUE,
       '#access' => (bool) $config->get('access_token') && $config->get('refresh_token'),
     ];
     $form['oauth']['tokens']['access_token'] = [
       '#type' => 'textfield',
-      '#title' => t('Access token'),
+      '#title' => $this->t('Access token'),
       '#required' => FALSE,
       '#default_value' => $config->get('access_token'),
       '#attributes' => ['readonly' => 'readonly'],
     ];
     $form['oauth']['tokens']['refresh_token'] = [
       '#type' => 'textfield',
-      '#title' => t('Refresh Token'),
+      '#title' => $this->t('Refresh Token'),
       '#required' => FALSE,
       '#default_value' => $config->get('refresh_token'),
       '#attributes' => ['readonly' => 'readonly'],
     ];
     $form['oauth']['button'] = [
       '#type' => 'submit',
-      '#value' => t('Authorize'),
+      '#value' => $this->t('Authorize'),
       '#submit' => ['::submitForm', '::oauthAuthorizeSubmit'],
       '#access' => (bool) !$config->get('access_token'),
     ];
     $form['oauth']['disconnect'] = [
       '#type' => 'submit',
-      '#value' => t('Disconnect'),
+      '#value' => $this->t('Disconnect'),
       '#limit_validation_errors' => [],
       '#submit' => ['::oauthDisconnectSubmit'],
       '#access' => (bool) $config->get('access_token'),
@@ -105,7 +105,7 @@ class SettingsForm extends ConfigFormBase {
 
     $form['help'] = [
       '#type' => 'details',
-      '#title' => t('Help'),
+      '#title' => $this->t('Help'),
       '#open' => FALSE,
     ];
     $form['help']['list'] = [