diff --git a/objects/virustotal-report/definition.json b/objects/virustotal-report/definition.json
index d8af407..9fd302f 100644
--- a/objects/virustotal-report/definition.json
+++ b/objects/virustotal-report/definition.json
@@ -51,7 +51,7 @@
         "Exernal analysis"
       ],
       "misp-attribute": "text",
-      "multiple": "true"
+      "multiple": true
     }
   },
   "version": 2,