diff --git a/SCHEMATA/project.schema.json b/SCHEMATA/project.schema.json
index 48899b883195a569f13559b589d2e1944da6fec9..b1bb7044d9921499a4ea602f824a7eed04d24284 100644
--- a/SCHEMATA/project.schema.json
+++ b/SCHEMATA/project.schema.json
@@ -252,17 +252,17 @@
               ],
               "properties": {
                 "raw": {
-                  "type": "array",
+                  "type": "object",
                   "description": "Information on raw research data",
                   "$ref": "#/definitions/data"
                 },
                 "refined": {
-                  "type": "array",
+                  "type": "object",
                   "description": "Information on refined research data",
                   "$ref": "#/definitions/data"
                 },
                 "final": {
-                  "type": "array",
+                  "type": "object",
                   "description": "Information on final and publication-ready research data",
                   "$ref": "#/definitions/data"
                 }