diff --git a/core/modules/filter/config/filter.schema.yml b/core/modules/filter/config/filter.schema.yml
index 332eadd..6ffe0a4 100644
--- a/core/modules/filter/config/filter.schema.yml
+++ b/core/modules/filter/config/filter.schema.yml
@@ -1,15 +1,10 @@
-# Data type for filter
-filter:
-  type: string
-  label: 'Filter'
-
 # Module settings
 filter.settings:
   type: mapping
   label: 'Filter settings'
   mapping:
     "fallback_format"
-      type: filter
+      type: string
 
 # Filter format settings
 filter.format.*:
@@ -17,7 +12,7 @@ filter.format.*:
   label: "Filter format"
   mapping:
     "format":
-      type: filter
+      type: string
     "name":
       type: string
     "status":