diff --git a/src/calibre/db/fts/pool.py b/src/calibre/db/fts/pool.py
index c5ef3c30f1..e1fb0e2c3b 100644
--- a/src/calibre/db/fts/pool.py
+++ b/src/calibre/db/fts/pool.py
@@ -207,7 +207,7 @@ class Pool:
             self.initialized.clear()
 
     def join(self):
-        with suppress(AttributeError):
+        with suppress(AttributeError, PythonFinalizationError):
             self.supervisor_thread.join()
         for w in self.workers:
             w.join()