diff --git a/test/js/bun/spawn/spawn_waiter_thread-fixture.js b/test/js/bun/spawn/spawn_waiter_thread-fixture.js
index f1cb253d8f..d7ec15907c 100644
--- a/test/js/bun/spawn/spawn_waiter_thread-fixture.js
+++ b/test/js/bun/spawn/spawn_waiter_thread-fixture.js
@@ -4,4 +4,4 @@ if (!process.env.BUN_GARBAGE_COLLECTOR_LEVEL || !process.env.BUN_FEATURE_FLAG_FO
   throw new Error("This test must be run with BUN_GARBAGE_COLLECTOR_LEVEL and BUN_FEATURE_FLAG_FORCE_WAITER_THREAD");
 }
 
-spawn("sleep", ["infinity"]).ref();
+spawn("sleep", ["infinity"]);
diff --git a/test/js/bun/spawn/spawn_waiter_thread.test.ts b/test/js/bun/spawn/spawn_waiter_thread.test.ts
index 4d90f7020a..096c203fc3 100644
--- a/test/js/bun/spawn/spawn_waiter_thread.test.ts
+++ b/test/js/bun/spawn/spawn_waiter_thread.test.ts
@@ -22,6 +22,8 @@ if (process.platform === "linux") {
     await proc.exited;
 
     const resourceUsage = proc.resourceUsage();
+    
+    // Assert we didn't use 100% of CPU time
     expect(resourceUsage?.cpuTime.total).toBeLessThan(750_000n);
   });
 }