diff --git a/source/behavior/biomes/components/minecraft.capped_surface.json b/source/behavior/biomes/components/minecraft.capped_surface.json
index 88d13c45..4d2592a8 100644
--- a/source/behavior/biomes/components/minecraft.capped_surface.json
+++ b/source/behavior/biomes/components/minecraft.capped_surface.json
@@ -12,7 +12,7 @@
       "minItems": 1,
       "items": {
         "title": "Block Reference",
-        "description": "UNDOCUMENTED",
+        "description": "A block reference.",
         "$comment": "UNDOCUMENTED",
         "type": "string"
       }
@@ -23,7 +23,7 @@
       "minItems": 1,
       "items": {
         "title": "Block Reference",
-        "description": "UNDOCUMENTED",
+        "description": "A block reference.",
         "$comment": "UNDOCUMENTED",
         "type": "string"
       }