diff --git a/installer/data/mysql/atomicupdate/bug_14205-add_fk_course_reserves_ci_id.sql b/installer/data/mysql/atomicupdate/bug_14205-add_fk_course_reserves_ci_id.sql
new file mode 100644
index 0000000000..1a68545840
--- /dev/null
+++ b/installer/data/mysql/atomicupdate/bug_14205-add_fk_course_reserves_ci_id.sql
@@ -0,0 +1,2 @@
+DELETE cr.* FROM course_reserves AS cr LEFT JOIN course_items USING(ci_id) WHERE course_items.ci_id IS NULL;
+ALTER TABLE course_reserves add CONSTRAINT course_reserves_ibfk_2 FOREIGN KEY (ci_id) REFERENCES course_items (ci_id) ON DELETE CASCADE ON UPDATE CASCADE;
diff --git a/installer/data/mysql/kohastructure.sql b/installer/data/mysql/kohastructure.sql
index e919349739..fd58258380 100644
--- a/installer/data/mysql/kohastructure.sql
+++ b/installer/data/mysql/kohastructure.sql
@@ -623,7 +623,9 @@ CREATE TABLE `course_reserves` (
 -- Constraints for table `course_reserves`
 --
 ALTER TABLE `course_reserves`
-  ADD CONSTRAINT `course_reserves_ibfk_1` FOREIGN KEY (`course_id`) REFERENCES `courses` (`course_id`);
+  ADD CONSTRAINT `course_reserves_ibfk_1` FOREIGN KEY (`course_id`) REFERENCES `courses` (`course_id`),
+  ADD CONSTRAINT `course_reserves_ibfk_2` FOREIGN KEY (`ci_id`) REFERENCES `course_items` (`ci_id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
 
 --
 -- Table structure for table `branch_borrower_circ_rules`