diff --git a/source/behavior/entities/format/components/preferred_path.json b/source/behavior/entities/format/components/preferred_path.json
index c4fff3eb..969b7e15 100644
--- a/source/behavior/entities/format/components/preferred_path.json
+++ b/source/behavior/entities/format/components/preferred_path.json
@@ -4,7 +4,6 @@
   "title": "Preferred Path",
   "description": "Specifies costing information for mobs that prefer to walk on preferred paths.",
   "additionalProperties": false,
-  "required": ["preferred_path_blocks"],
   "properties": {
     "default_block_cost": {
       "type": "number",
diff --git a/source/behavior/entities/format/types/entity_types.json b/source/behavior/entities/format/types/entity_types.json
index 8d2a2bdc..ca412df1 100644
--- a/source/behavior/entities/format/types/entity_types.json
+++ b/source/behavior/entities/format/types/entity_types.json
@@ -6,6 +6,7 @@
       "description": "The entity type.",
       "title": "Entity Type",
       "type": "object",
+      "additionalProperties": false,
       "properties": {
         "filters": { "type": "object", "$ref": "../../filters/filters.json" },
         "max_dist": {