diff --git a/src/sql/upgrade-43.sql b/src/sql/upgrade-43.sql
index 5fe7034b..c370ddd5 100644
--- a/src/sql/upgrade-43.sql
+++ b/src/sql/upgrade-43.sql
@@ -1,3 +1,3 @@
 alter table Builds drop column busy, drop column locker, drop column logfile;
 
-drop index IndexBuildsOnFinishedBusy;
+drop index if exists IndexBuildsOnFinishedBusy;