diff --git a/objects/whois/definition.json b/objects/whois/definition.json
index 0c4d5b0..9e684a9 100644
--- a/objects/whois/definition.json
+++ b/objects/whois/definition.json
@@ -74,6 +74,7 @@
         "External analysis"
       ],
       "ui-priority": 0,
+      "multiple": true,
       "misp-attribute": "domain"
     },
     "comment": {
@@ -84,6 +85,7 @@
     "ip-address": {
       "description": "IP address of the whois entry",
       "ui-priority": 0,
+      "multiple": true,
       "misp-attribute": "ip-src"
     }
   },