diff --git a/schema/compose-spec.json b/schema/compose-spec.json
index df3cf320..a2f5e244 100644
--- a/schema/compose-spec.json
+++ b/schema/compose-spec.json
@@ -19,7 +19,6 @@
     "include": {
       "type": "array",
       "items": {
-        "type": "object",
         "$ref": "#/definitions/include"
       },
       "description": "compose sub-projects to be included."