diff --git a/installer/data/mysql/atomicupdate/bug_15084-add_fk_for_currency.sql b/installer/data/mysql/atomicupdate/bug_15084-add_fk_for_currency.sql
new file mode 100644
index 0000000000..d3e00c106e
--- /dev/null
+++ b/installer/data/mysql/atomicupdate/bug_15084-add_fk_for_currency.sql
@@ -0,0 +1,8 @@
+-- Add the new currency.archived column
+alter table currency add column archived tinyint(1) default 0;
+-- Set currency=NULL if empty (just in case)
+update aqorders set currency=NULL where currency="";
+-- Insert the missing currency and mark them as archived before adding the FK
+insert into currency(currency, archived) select distinct currency, 1 from aqorders where currency not in (select currency from currency);
+-- And finally add the FK
+alter table aqorders add foreign key (currency) references currency(currency) on delete set null on update set null;