diff --git a/inv/models/capability.py b/inv/models/capability.py
index 074c7cd3239a94509c114a2031109677174704db..bfc9349b751eca762c69a48e55441d167e815cdf 100644
--- a/inv/models/capability.py
+++ b/inv/models/capability.py
@@ -35,6 +35,7 @@ class Capability(Document):
         "strict": False,
         "auto_create_index": False,
         "json_collection": "inv.capabilities",
+        "json_unique_fields": ["name", "uuid"],
     }
     name = StringField(unique=True)
     uuid = UUIDField(binary=True)