From b610ba0aa57e78753940722f6b57c8cef4761a3f Mon Sep 17 00:00:00 2001
From: Mark Backman <mark@daily.co>
Date: Mon, 16 Mar 2026 19:48:49 -0400
Subject: [PATCH] Fix OpenAI STT crash when language is a plain string instead
 of Language enum

---
 src/pipecat/services/openai/stt.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/pipecat/services/openai/stt.py b/src/pipecat/services/openai/stt.py
index 68ab7e067..fd98dbf49 100644
--- a/src/pipecat/services/openai/stt.py
+++ b/src/pipecat/services/openai/stt.py
@@ -358,8 +358,8 @@ class OpenAIRealtimeSTTService(WebsocketSTTService):
         Returns:
             Two-letter ISO-639-1 language code.
         """
-        # Language.value is e.g. "en", "en-US", "fr", "zh".
-        return language.value.split("-")[0].lower()
+        # Language value is e.g. "en", "en-US", "fr", "zh".
+        return str(language).split("-")[0].lower()
 
     def can_generate_metrics(self) -> bool:
         """Check if the service can generate processing metrics.