diff --git a/packages/xo-server/src/xapi-object-to-xo.js b/packages/xo-server/src/xapi-object-to-xo.js
index c80ec58fb..967a58b65 100644
--- a/packages/xo-server/src/xapi-object-to-xo.js
+++ b/packages/xo-server/src/xapi-object-to-xo.js
@@ -46,7 +46,7 @@ function link(obj, prop, idField = '$id') {
   }
 
   if (Array.isArray(dynamicValue)) {
-    return dynamicValue.map(_ => _[idField])
+    return dynamicValue.map(_ => _?.[idField])
   }
 
   return dynamicValue[idField]