diff --git a/util/db-upgrade-1.1.0-vs-1.2.0.sql b/util/db-upgrade-1.1.0-vs-1.2.0.sql
index 4d8a645..f9ac927 100644
--- a/util/db-upgrade-1.1.0-vs-1.2.0.sql
+++ b/util/db-upgrade-1.1.0-vs-1.2.0.sql
@@ -64,7 +64,6 @@
 -- 2016.10.07
 
 drop index `attachment_idx2` on `attachment`;
-drop index `attachment_idx3` on `attachment`;
 create index `attachment_idx2` on `attachment`(`sig`, `size`, `ptr`);
 
 create table if not exists `private` (