diff --git a/guides/check_definition.schema.json b/guides/check_definition.schema.json
index a4af869a..025d3787 100644
--- a/guides/check_definition.schema.json
+++ b/guides/check_definition.schema.json
@@ -163,8 +163,7 @@
       "additionalProperties": false,
       "properties": {
         "target_type": {
-          "type": "string",
-          "enum": ["host", "cluster"]
+          "type": "string"
         }
       },
       "patternProperties": {
diff --git a/guides/specification.md b/guides/specification.md
index 9237e428..2ba41301 100644
--- a/guides/specification.md
+++ b/guides/specification.md
@@ -250,13 +250,13 @@ A key-value map that enriches the Check being declared by providing extra inform
 
 - keys must be non empty strings (`foo`, `bar`, `foo_bar`, `qux1`)
 - values can be any of the following types `string`, `number`, `boolean`, `string[]` (list of strings)
-- `target_type` is a **required** key of the `metadata` map. It's value can be either a `host` or `cluster`.
+- `target_type` is a **required** key of the `metadata` map. It's value is  a `string`.
 
 Example:
 
 ```yaml
 metadata:
-  target_type: host
+  target_type: example_target
   foo: bar
   bar: 42
   baz: true