diff --git a/test/node-test/debug.js b/test/node-test/debug.js
index 53eec7aa774..f60500da2b2 100644
--- a/test/node-test/debug.js
+++ b/test/node-test/debug.js
@@ -6,7 +6,7 @@ const { join } = require('node:path')
 const { tspl } = require('@matteo.collina/tspl')
 
 test('debug#websocket', async t => {
-  const assert = tspl(t, { plan: 5 })
+  const assert = tspl(t, { plan: 6 })
   const child = spawn(
     process.execPath,
     [join(__dirname, '../fixtures/websocket.js')],
@@ -27,25 +27,23 @@ test('debug#websocket', async t => {
     /(WEBSOCKET [0-9]+:) (closed connection to)/
   ]
 
-  t.after(() => {
-    child.kill()
-  })
-
   child.stderr.setEncoding('utf8')
   child.stderr.on('data', chunk => {
     chunks.push(chunk)
   })
   child.stderr.on('end', () => {
+    assert.strictEqual(chunks.length, assertions.length)
     for (let i = 1; i < chunks.length; i++) {
       assert.match(chunks[i], assertions[i])
     }
   })
 
   await assert.completed
+  child.kill()
 })
 
 test('debug#fetch', async t => {
-  const assert = tspl(t, { plan: 5 })
+  const assert = tspl(t, { plan: 6 })
   const child = spawn(
     process.execPath,
     [join(__dirname, '../fixtures/fetch.js')],
@@ -62,26 +60,24 @@ test('debug#fetch', async t => {
     /(FETCH [0-9]+:) (trailers received)/
   ]
 
-  t.after(() => {
-    child.kill()
-  })
-
   child.stderr.setEncoding('utf8')
   child.stderr.on('data', chunk => {
     chunks.push(chunk)
   })
   child.stderr.on('end', () => {
+    assert.strictEqual(chunks.length, assertions.length)
     for (let i = 0; i < chunks.length; i++) {
       assert.match(chunks[i], assertions[i])
     }
   })
 
   await assert.completed
+  child.kill()
 })
 
 test('debug#undici', async t => {
   // Due to Node.js webpage redirect
-  const assert = tspl(t, { plan: 5 })
+  const assert = tspl(t, { plan: 6 })
   const child = spawn(
     process.execPath,
     [join(__dirname, '../fixtures/undici.js')],
@@ -100,19 +96,17 @@ test('debug#undici', async t => {
     /(UNDICI [0-9]+:) (trailers received)/
   ]
 
-  t.after(() => {
-    child.kill()
-  })
-
   child.stderr.setEncoding('utf8')
   child.stderr.on('data', chunk => {
     chunks.push(chunk)
   })
   child.stderr.on('end', () => {
+    assert.strictEqual(chunks.length, assertions.length)
     for (let i = 0; i < chunks.length; i++) {
       assert.match(chunks[i], assertions[i])
     }
   })
 
   await assert.completed
+  child.kill()
 })