diff --git a/testing/matrix-sdk-test/src/test_json/members.rs b/testing/matrix-sdk-test/src/test_json/members.rs
index e875047ef..06d757bc0 100644
--- a/testing/matrix-sdk-test/src/test_json/members.rs
+++ b/testing/matrix-sdk-test/src/test_json/members.rs
@@ -3,6 +3,8 @@
 use once_cell::sync::Lazy;
 use serde_json::{json, Value as JsonValue};
 
+use super::DEFAULT_TEST_ROOM_ID;
+
 pub static MEMBERS: Lazy<JsonValue> = Lazy::new(|| {
     json!({
         "chunk": [
@@ -15,6 +17,7 @@ pub static MEMBERS: Lazy<JsonValue> = Lazy::new(|| {
             "event_id": "$151800140517rfvjc:localhost",
             "membership": "join",
             "origin_server_ts": 151800140,
+            "room_id": *DEFAULT_TEST_ROOM_ID,
             "sender": "@example:localhost",
             "state_key": "@example:localhost",
             "type": "m.room.member",