diff --git a/anki/deck.py b/anki/deck.py
index a3706a619..74f38d7de 100644
--- a/anki/deck.py
+++ b/anki/deck.py
@@ -942,7 +942,7 @@ where facts.id not in (select factId from cards)""")
         # remove any dangling facts
         self.deleteDanglingFacts()
         self.rebuildCounts()
-        self.setModified()
+        self.flushMod()
 
     # Models
     ##########################################################################