diff --git a/src/config.ts b/src/config.ts
index 8148ab3b..848f9836 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -273,7 +273,7 @@ class Conf {
   }
   /** Translation provider used to translate posts. */
   static get translationProvider(): string | undefined {
-    return Deno.env.get('TRANSLATION_PROVIDER')?.toLowerCase();
+    return Deno.env.get('TRANSLATION_PROVIDER');
   }
   /** Translation provider URL endpoint. */
   static get translationProviderEndpoint(): string | undefined {
diff --git a/src/middleware/translatorMiddleware.ts b/src/middleware/translatorMiddleware.ts
index 6e336ad5..2d3971dd 100644
--- a/src/middleware/translatorMiddleware.ts
+++ b/src/middleware/translatorMiddleware.ts
@@ -11,7 +11,7 @@ export const translatorMiddleware: AppMiddleware = async (c, next) => {
   const translationProvider = Conf.translationProvider;
 
   switch (translationProvider) {
-    case 'DeepL'.toLowerCase():
+    case 'deepl':
       if (apiKey) {
         c.set(
           'translator',
@@ -19,7 +19,7 @@ export const translatorMiddleware: AppMiddleware = async (c, next) => {
         );
       }
       break;
-    case 'Libretranslate'.toLowerCase():
+    case 'libretranslate':
       if (apiKey) {
         c.set(
           'translator',
diff --git a/src/translators/DeepLTranslator.test.ts b/src/translators/DeepLTranslator.test.ts
index e261a9b6..8335670e 100644
--- a/src/translators/DeepLTranslator.test.ts
+++ b/src/translators/DeepLTranslator.test.ts
@@ -7,7 +7,7 @@ import { getLanguage } from '@/test.ts';
 const endpoint = Conf.translationProviderEndpoint;
 const apiKey = Conf.translationProviderApiKey;
 const translationProvider = Conf.translationProvider;
-const deepL = 'DeepL'.toLowerCase();
+const deepL = 'deepl';
 
 Deno.test('Translate status with EMPTY media_attachments and WITHOUT poll', {
   ignore: !(translationProvider === deepL && apiKey),
diff --git a/src/translators/LibreTranslateTranslator.test.ts b/src/translators/LibreTranslateTranslator.test.ts
index 11f57d09..8d1fc24d 100644
--- a/src/translators/LibreTranslateTranslator.test.ts
+++ b/src/translators/LibreTranslateTranslator.test.ts
@@ -7,7 +7,7 @@ import { getLanguage } from '@/test.ts';
 const endpoint = Conf.translationProviderEndpoint;
 const apiKey = Conf.translationProviderApiKey;
 const translationProvider = Conf.translationProvider;
-const libreTranslate = 'Libretranslate'.toLowerCase();
+const libreTranslate = 'libretranslate';
 
 Deno.test('Translate status with EMPTY media_attachments and WITHOUT poll', {
   ignore: !(translationProvider === libreTranslate && apiKey),