diff --git a/.cspell-project-words.txt b/.cspell-project-words.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7a6531479a12924fb6ac830b93bb946b3b7bf4a7
--- /dev/null
+++ b/.cspell-project-words.txt
@@ -0,0 +1,13 @@
+beispiel
+beispiele
+danke
+kartoffel
+kartoffeln
+katze
+katzen
+schön
+seite
+seiten
+hund
+hunde
+mymodule
diff --git a/README.md b/README.md
index aa7c56eaa79a60cdc078585450ff9e5045eede68..4b576b70118ccb106086c1b1a7d9ff8b841eede4 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ In a deploy hook for multiple translation we need to create an array and hand it
 This is how it looks for singular case:
 
 ```
-function mymodule_deploy_singular_mutliple_xy() {
+function HOOK_deploy_singular_multiple_xy() {
   $translations_array = [
     'cat' => 'Katze',
     'dog' => 'Hund'
diff --git a/src/TsiService.php b/src/TsiService.php
index ea589a7db60691384e530f963b84b146100f6ba9..5fa1c640a8669fc4f0d3522396320b3ab8fa1799 100644
--- a/src/TsiService.php
+++ b/src/TsiService.php
@@ -51,15 +51,6 @@ class TsiService implements TsiServiceInterface {
     $this->clearLocaleCaches($langcode, $lids);
   }
 
-  /**
-   * Call of the old method.
-   *
-   * Redirect the deprecated method to the updated method.
-   */
-  public function addPlural($singular_source, $singular_translated, $plural_source, $plural_translated, $langcode, $context = ''): void {
-    $this->addPluralTranslation($singular_source, $singular_translated, $plural_source, $plural_translated, $langcode, $context);
-  }
-
   /**
    * {@inheritdoc}
    */
diff --git a/src/TsiServiceInterface.php b/src/TsiServiceInterface.php
index d7fcfeb8d5da34e87cbc0ea1b31fc336274c9e91..d5f4875833c0402197312e99e252e18af41666d8 100644
--- a/src/TsiServiceInterface.php
+++ b/src/TsiServiceInterface.php
@@ -35,28 +35,6 @@ interface TsiServiceInterface {
    */
   public function addMultipleTranslation(array $translation_array, string $langcode, $context = ''): void;
 
-  /**
-   * Adds translation for plural strings.
-   *
-   * @param string $singular_source
-   *   The singular form of the source string in default language.
-   * @param string $singular_translated
-   *   The singular form of the translated source string in the language given
-   *   by the $langcode.
-   * @param string $plural_source
-   *   The plural form of the source string in default language.
-   * @param string $plural_translated
-   *   The plural form of the translated source string in the language given by
-   *   the $langcode.
-   * @param string $langcode
-   *   The language code for the translations.
-   * @param string $context
-   *   (optional) The context for the translations.
-   *
-   * @depricated Use addPluralTranslation() instead.
-   */
-  public function addPlural($singular_source, $singular_translated, $plural_source, $plural_translated, $langcode, $context = '');
-
   /**
    * Adds translation for plural strings.
    *
diff --git a/tests/src/Kernel/TsiApiTest.php b/tests/src/Kernel/TsiApiTest.php
index aaa515313fd6b45e192803a66fefbc42fd19f228..83e3fe24b7e83171a8d9b77e5a30345d6520a493 100644
--- a/tests/src/Kernel/TsiApiTest.php
+++ b/tests/src/Kernel/TsiApiTest.php
@@ -76,6 +76,7 @@ class TsiApiTest extends KernelTestBase {
     $this->tsiService->addTranslation($source, $translated, $langcode);
 
     // Assert that the translated string is correct.
+    // @phpcs:ignore
     $this->assertEquals($translated, $this->t($source, [], ['langcode' => $langcode]));
   }
 
@@ -97,6 +98,7 @@ class TsiApiTest extends KernelTestBase {
 
     // Assert that the translations were added successfully.
     foreach ($translation_array as $source => $translated) {
+      // @phpcs:ignore
       $this->assertEquals($translated, $this->t($source, [], ['langcode' => $langcode]));
     }
   }