diff --git a/crates/collab/src/integration_tests.rs b/crates/collab/src/integration_tests.rs
index 006598a6b1..cf6bb8af3a 100644
--- a/crates/collab/src/integration_tests.rs
+++ b/crates/collab/src/integration_tests.rs
@@ -2422,7 +2422,10 @@ async fn test_collaborating_with_diagnostics(
 
     // Join project as client C and observe the diagnostics.
     let project_c = client_c.build_remote_project(project_id, cx_c).await;
-    let project_c_diagnostic_summaries = Rc::new(RefCell::new(Vec::new()));
+    let project_c_diagnostic_summaries =
+        Rc::new(RefCell::new(project_c.read_with(cx_c, |project, cx| {
+            project.diagnostic_summaries(cx).collect::<Vec<_>>()
+        })));
     project_c.update(cx_c, |_, cx| {
         let summaries = project_c_diagnostic_summaries.clone();
         cx.subscribe(&project_c, {