diff --git a/objects/instant-message/definition.json b/objects/instant-message/definition.json
index ecddaa2..802b0a8 100644
--- a/objects/instant-message/definition.json
+++ b/objects/instant-message/definition.json
@@ -1,7 +1,6 @@
 {
   "requiredOneOf": [
     "body",
-    "from",
     "from-user"
   ],
   "attributes": {