diff --git a/data/schema/AS-SET-SCHEMA b/data/schema/AS-SET-SCHEMA
index 2078ed9c9..c8eadf0e6 100644
--- a/data/schema/AS-SET-SCHEMA
+++ b/data/schema/AS-SET-SCHEMA
@@ -1,7 +1,7 @@
 schema:             AS-SET-SCHEMA
 ref:                dn42.as-set
 key:                as-set      required  single    primary schema
-key:                descr       optional  single
+key:                descr       optional  multiple
 key:                mnt-by      required  multiple  lookup=dn42.mntner
 key:                members     optional  multiple  lookup=dn42.aut-num,dn42.as-set
 key:                mbrs-by-ref optional  multiple  lookup=dn42.mntner
diff --git a/data/schema/ROUTE-SCHEMA b/data/schema/ROUTE-SCHEMA
index 29d6a7d7e..228411a9f 100644
--- a/data/schema/ROUTE-SCHEMA
+++ b/data/schema/ROUTE-SCHEMA
@@ -6,7 +6,7 @@ key:                origin      required  multiple  lookup=dn42.aut-num
 key:                member-of   optional  multiple  lookup=dn42.route-set
 key:                admin-c     optional  multiple  lookup=dn42.person,dn42.role
 key:                tech-c      optional  multiple  lookup=dn42.person,dn42.role
-key:                descr       optional  single
+key:                descr       optional  multiple
 key:                remarks     optional  multiple
 key:                source      required  single    lookup=dn42.registry
 key:                pingable    optional  multiple
diff --git a/data/schema/ROUTE-SET-SCHEMA b/data/schema/ROUTE-SET-SCHEMA
index e209aa730..1a5f8ba96 100644
--- a/data/schema/ROUTE-SET-SCHEMA
+++ b/data/schema/ROUTE-SET-SCHEMA
@@ -1,7 +1,7 @@
 schema:             ROUTE-SET-SCHEMA
 ref:                dn42.route-set
 key:                route-set    required  single    primary schema
-key:                descr        optional  single
+key:                descr        optional  multiple
 key:                mnt-by       required  multiple  lookup=dn42.mntner
 key:                members      deprecate multiple
 key:                mp-members   optional  multiple