diff --git a/app/constant.ts b/app/constant.ts
index 24b7e9dbc..264fe0013 100644
--- a/app/constant.ts
+++ b/app/constant.ts
@@ -277,8 +277,8 @@ export const KnowledgeCutOffDate: Record<string, string> = {
   "gemini-pro-vision": "2023-12",
 };
 
-export const DEFAULT_TTS_ENGINE = "OpenAI-TTS";
-export const DEFAULT_TTS_ENGINES = ["Edge-TTS","OpenAI-TTS" ];
+export const DEFAULT_TTS_ENGINE = "Edge-TTS";
+export const DEFAULT_TTS_ENGINES = ["Edge-TTS", "OpenAI-TTS"];
 export const DEFAULT_TTS_MODEL = "tts-1";
 export const DEFAULT_TTS_VOICE = "alloy";
 export const DEFAULT_TTS_MODELS = ["tts-1", "tts-1-hd"];