From 141390ec34ef7f355a08d9c35df6ca3f70d038e4 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 3 Sep 2025 07:01:59 +0530
Subject: [PATCH] E-book viewer: Read Aloud: Fix regression in previous release
 that broke changing voices when engine is set to 'Automatically select'.
 Fixes #2121897 [TTS Error with version 8.9 so went back to 8.8 which works
 fine.](https://bugs.launchpad.net/calibre/+bug/2121897)

---
 src/calibre/gui2/tts/config.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/gui2/tts/config.py b/src/calibre/gui2/tts/config.py
index 89a67bbdad..64bd00802e 100644
--- a/src/calibre/gui2/tts/config.py
+++ b/src/calibre/gui2/tts/config.py
@@ -572,7 +572,7 @@ class ConfigDialog(Dialog):
 
     def accept(self):
         engine_name = self.engine_choice.value
-        tts = create_tts_backend(engine_name)
+        tts = create_tts_backend(engine_name or None)
         s = self.engine_specific_config.as_settings()
         if not tts.validate_settings(s, self):
             return