From 3b535e857aed6e4adf6850322408f3331b0f7d78 Mon Sep 17 00:00:00 2001
From: Quentin Fuxa <quentin.fuxa@gmail.com>
Date: Wed, 11 Feb 2026 22:10:00 +0100
Subject: [PATCH] fix NoneType concatenation in add_translation

fixes #296
---
 whisperlivekit/tokens_alignment.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/whisperlivekit/tokens_alignment.py b/whisperlivekit/tokens_alignment.py
index a1d4074..7760ac6 100644
--- a/whisperlivekit/tokens_alignment.py
+++ b/whisperlivekit/tokens_alignment.py
@@ -53,7 +53,8 @@ class TokensAlignment:
             segment.translation = ''
         for ts in self.all_translation_segments:
             if ts.is_within(segment):
-                segment.translation += ts.text + (self.sep if ts.text else '')
+                if ts.text:
+                    segment.translation += ts.text + self.sep
             elif segment.translation:
                 break