diff --git a/test/kill/kill.test.mjs b/test/kill/kill.test.mjs
index 2cbebe1..1dc6fba 100644
--- a/test/kill/kill.test.mjs
+++ b/test/kill/kill.test.mjs
@@ -24,17 +24,20 @@ t.describe('kill', function() {
   })
 
   t.test('should succeed in killing tree', async function() {
+    console.log()
     worker = spawn('node', ['./test/kill/runner.mjs'])
     assert.ok(worker.pid)
 
     // Give it some time to start
     await new Promise(res => {
       worker.stdout.on('data', function(data) {
-        if (data.toString().indexOf('primary') >= 0) res()
+        process.stdout.write(data)
+        if (data.toString().indexOf('secondary') >= 0) res()
       })
     })
 
     return kill(worker.pid).then(function(pids) {
+      console.log(pids)
       assert.strictEqual(pids.size, 2)
     })
   })
diff --git a/test/kill/runner.mjs b/test/kill/runner.mjs
index 2e2881a..0b4110e 100644
--- a/test/kill/runner.mjs
+++ b/test/kill/runner.mjs
@@ -1,11 +1,11 @@
 import { spawn } from 'child_process'
 
+console.log('primary', process.pid)
+
 let secondary = spawn('node', ['./test/kill/second_runner.mjs'])
 
 secondary.stdout.on('data', function(data) {
   process.stdout.write(data)
 })
 
-console.log('primary')
-
-setInterval(function() { console.log('primary') }, 100)
\ No newline at end of file
+setInterval(function() { console.log('primary', process.pid) }, 100)
\ No newline at end of file
diff --git a/test/kill/second_runner.mjs b/test/kill/second_runner.mjs
index 9670a73..7a30e22 100644
--- a/test/kill/second_runner.mjs
+++ b/test/kill/second_runner.mjs
@@ -1,2 +1,2 @@
-console.log('secondary')
-setInterval(function() { console.log('secondary') }, 100)
\ No newline at end of file
+console.log('secondary', process.pid)
+setInterval(function() { console.log('secondary', process.pid) }, 100)
\ No newline at end of file