diff --git a/anki/deck.py b/anki/deck.py
index 860a6ae90..382524498 100644
--- a/anki/deck.py
+++ b/anki/deck.py
@@ -1219,6 +1219,7 @@ Return new path, relative to media dir."""
     def close(self):
         self.s.rollback()
         self.s.clear()
+        self.s.close()
         self.engine.dispose()
 
     def rollback(self):