diff --git a/src/schemas/space.json b/src/schemas/space.json
index 11868df06..542f0c339 100644
--- a/src/schemas/space.json
+++ b/src/schemas/space.json
@@ -351,6 +351,7 @@
         "treasuries": {
           "type": "array",
           "maxItems": 10,
+          "uniqueItems": true,
           "items": {
             "type": "object",
             "properties": {