diff --git a/test/parallel/test-http-server-connection-list-when-close-deferred.js b/test/parallel/test-http-server-connection-list-when-close-deferred.js
new file mode 100644
index 00000000000..af87e356161
--- /dev/null
+++ b/test/parallel/test-http-server-connection-list-when-close-deferred.js
@@ -0,0 +1,35 @@
+'use strict';
+
+const common = require('../common');
+const http = require('http');
+
+// Keep this case in a separate process from the immediate-close case so
+// their modified parsers cannot be reused across cases.
+
+function request(server) {
+  http.get({
+    agent: false,
+    port: server.address().port,
+    path: '/',
+  }, (res) => {
+    res.resume();
+  });
+}
+
+const server = http.createServer(common.mustCallAtLeast((req, res) => {
+  // See `freeParser` in _http_common.js
+  const { parser } = req.socket;
+  parser.free = common.mustCall(() => {
+    setImmediate(common.mustCall(() => {
+      parser.close();
+    }));
+  });
+  req.socket.on('close', common.mustCall(() => {
+    setImmediate(common.mustCall(() => {
+      server.close();
+    }));
+  }));
+  res.end('ok');
+})).listen(0, common.mustCall(() => {
+  request(server);
+}));
diff --git a/test/parallel/test-http-server-connection-list-when-close.js b/test/parallel/test-http-server-connection-list-when-close.js
index 0c8308b63c5..305755b14eb 100644
--- a/test/parallel/test-http-server-connection-list-when-close.js
+++ b/test/parallel/test-http-server-connection-list-when-close.js
@@ -13,36 +13,14 @@ function request(server) {
   });
 }
 
-{
-  const server = http.createServer(common.mustCallAtLeast((req, res) => {
-    //  Hack to not remove parser out of server.connectionList
-    //  See `freeParser` in _http_common.js
-    req.socket.parser.free = common.mustCall();
-    req.socket.on('close', common.mustCall(() => {
-      server.close();
-    }));
-    res.end('ok');
-  })).listen(0, common.mustCall(() => {
-    request(server);
+const server = http.createServer(common.mustCallAtLeast((req, res) => {
+  //  Hack to not remove parser out of server.connectionList
+  //  See `freeParser` in _http_common.js
+  req.socket.parser.free = common.mustCall();
+  req.socket.on('close', common.mustCall(() => {
+    server.close();
   }));
-}
-
-{
-  const server = http.createServer(common.mustCallAtLeast((req, res) => {
-    // See `freeParser` in _http_common.js
-    const { parser } = req.socket;
-    parser.free = common.mustCall(() => {
-      setImmediate(common.mustCall(() => {
-        parser.close();
-      }));
-    });
-    req.socket.on('close', common.mustCall(() => {
-      setImmediate(common.mustCall(() => {
-        server.close();
-      }));
-    }));
-    res.end('ok');
-  })).listen(0, common.mustCall(() => {
-    request(server);
-  }));
-}
+  res.end('ok');
+})).listen(0, common.mustCall(() => {
+  request(server);
+}));