diff --git a/installer/data/mysql/en/marcflavour/marc21/mandatory/marc21_framework_DEFAULT.yml b/installer/data/mysql/en/marcflavour/marc21/mandatory/marc21_framework_DEFAULT.yml
index f403f6e771..e56839ea96 100644
--- a/installer/data/mysql/en/marcflavour/marc21/mandatory/marc21_framework_DEFAULT.yml
+++ b/installer/data/mysql/en/marcflavour/marc21/mandatory/marc21_framework_DEFAULT.yml
@@ -963,7 +963,7 @@ tables:
           liblibrarian: "Koha item type"
           libopac: "Koha item type"
           repeatable: 0
-          mandatory: 0
+          mandatory: 1
           kohafield: items.itype
           tab: 10
           authorised_value: itemtypes