diff --git a/ovos_stt_http_server/__init__.py b/ovos_stt_http_server/__init__.py
index bca9967..27bb99d 100644
--- a/ovos_stt_http_server/__init__.py
+++ b/ovos_stt_http_server/__init__.py
@@ -129,6 +129,8 @@ async def get_stt(request: Request):
     @app.post("/lang_detect")
     async def get_lang(request: Request):
         valid = request.query_params.get("valid_langs").split(",")
+        if len(valid) == 1:
+            return {"lang": valid[0], "conf": 1.0}
         audio_bytes = await request.body()
         lang, prob = model.detect_language(audio_bytes, valid_langs=valid)
         return {"lang": lang, "conf": prob}