diff --git a/api_v2.py b/api_v2.py
index 7b64cc4..ea1d0c7 100644
--- a/api_v2.py
+++ b/api_v2.py
@@ -253,11 +253,11 @@ def check_params(req:dict):
     if (text_lang in [None, ""]) :
         return JSONResponse(status_code=400, content={"message": "text_lang is required"})
     elif text_lang.lower() not in tts_config.languages:
-        return JSONResponse(status_code=400, content={"message": "text_lang is not supported"})
+        return JSONResponse(status_code=400, content={"message": f"text_lang: {text_lang} is not supported in version {tts_config.version}"})
     if (prompt_lang in [None, ""]) :
         return JSONResponse(status_code=400, content={"message": "prompt_lang is required"})
     elif prompt_lang.lower() not in tts_config.languages:
-        return JSONResponse(status_code=400, content={"message": f"prompt_lang: {prompt_lang} is not supported in {tts_config.version}"})
+        return JSONResponse(status_code=400, content={"message": f"prompt_lang: {prompt_lang} is not supported in version {tts_config.version}"})
     if media_type not in ["wav", "raw", "ogg", "aac"]:
         return JSONResponse(status_code=400, content={"message": f"media_type: {media_type} is not supported"})
     elif media_type == "ogg" and  not streaming_mode: