diff --git a/config/schema/config_help.schema.yml b/config/schema/config_help.schema.yml
index 6aa2340..7c0dd09 100644
--- a/config/schema/config_help.schema.yml
+++ b/config/schema/config_help.schema.yml
@@ -18,17 +18,17 @@ config_help.topic.*:
       type: sequence
       label: 'Related topics'
       sequence:
-        - type: string
+        type: string
     list_on:
       type: sequence
       label: 'List on topics'
       sequence:
-        - type: string
+        type: string
     body:
       type: sequence
       label: 'Body'
       sequence:
-        - type: config_help_text
+        type: config_help_text
 
 config_help_text:
   type: mapping