diff --git a/store/migration/sqlite/0.24/00__memo.sql b/store/migration/sqlite/0.24/00__memo.sql
index 45854e151..b7eb770d4 100644
--- a/store/migration/sqlite/0.24/00__memo.sql
+++ b/store/migration/sqlite/0.24/00__memo.sql
@@ -2,6 +2,5 @@
 ALTER TABLE memo DROP COLUMN tags;
 
 -- Remove deprecated indexes.
-DROP INDEX IF EXISTS idx_memo_tags;
 DROP INDEX IF EXISTS idx_memo_content;
 DROP INDEX IF EXISTS idx_memo_visibility;
\ No newline at end of file