diff --git a/core/modules/forum/config/schema/forum.schema.yml b/core/modules/forum/config/schema/forum.schema.yml
index 01d3490..60bd0f7 100644
--- a/core/modules/forum/config/schema/forum.schema.yml
+++ b/core/modules/forum/config/schema/forum.schema.yml
@@ -26,8 +26,8 @@ forum.settings:
       type: sequence
       label: 'Containers to group related forums'
       sequence:
-        - type: string
-          label: 'Containers to group related forums'
+        - type: integer
+          label: 'Taxonomy Term ID'
     topics:
       type: mapping
       label: 'Forum topics block'