diff --git a/lib/_http_incoming.js b/lib/_http_incoming.js
index a83c8660db589b..950c8c6e08bbc9 100644
--- a/lib/_http_incoming.js
+++ b/lib/_http_incoming.js
@@ -122,7 +122,9 @@ ObjectDefineProperty(IncomingMessage.prototype, 'headers', {
     }
     return this[kHeaders];
   },
-  set: function(val) {}
+  set: function(val) {
+    this[kHeaders] = val;
+  }
 });
 
 ObjectDefineProperty(IncomingMessage.prototype, 'headersDistinct', {
@@ -140,7 +142,9 @@ ObjectDefineProperty(IncomingMessage.prototype, 'headersDistinct', {
     }
     return this[kHeadersDistinct];
   },
-  set: function(val) {}
+  set: function(val) {
+    this[kHeadersDistinct] = val;
+  }
 });
 
 ObjectDefineProperty(IncomingMessage.prototype, 'trailers', {
@@ -158,7 +162,9 @@ ObjectDefineProperty(IncomingMessage.prototype, 'trailers', {
     }
     return this[kTrailers];
   },
-  set: function(val) {}
+  set: function(val) {
+    this[kTrailers] = val;
+  }
 });
 
 ObjectDefineProperty(IncomingMessage.prototype, 'trailersDistinct', {
@@ -176,7 +182,9 @@ ObjectDefineProperty(IncomingMessage.prototype, 'trailersDistinct', {
     }
     return this[kTrailersDistinct];
   },
-  set: function(val) {}
+  set: function(val) {
+    this[kTrailersDistinct] = val;
+  }
 });
 
 IncomingMessage.prototype.setTimeout = function setTimeout(msecs, callback) {
diff --git a/test/parallel/test-http-set-headers-distinct.js b/test/parallel/test-http-set-headers-distinct.js
deleted file mode 100644
index 3a3c99cdcc5f00..00000000000000
--- a/test/parallel/test-http-set-headers-distinct.js
+++ /dev/null
@@ -1,54 +0,0 @@
-'use strict';
-
-const common = require('../common');
-const assert = require('assert');
-const { createServer, request } = require('http');
-
-const server = createServer(
-  common.mustCall((req, res) => {
-    req.headersDistinct = { 'x-req-a': ['zzz'] };
-
-    // headersDistinct setter should be a No-Op
-    assert.deepStrictEqual(req.headersDistinct, {
-      'transfer-encoding': [
-        'chunked',
-      ],
-      'connection': [
-        'keep-alive',
-      ],
-      'host': [
-        `127.0.0.1:${server.address().port}`,
-      ]
-    });
-
-    req.on('end', function() {
-      res.write('BODY');
-      res.end();
-    });
-
-    req.resume();
-  })
-);
-
-server.listen(
-  0,
-  common.mustCall(() => {
-    const req = request(
-      {
-        host: '127.0.0.1',
-        port: server.address().port,
-        path: '/',
-        method: 'POST',
-      },
-      common.mustCall((res) => {
-        res.on('end', function() {
-          server.close();
-        });
-        res.resume();
-      })
-    );
-
-    req.write('BODY');
-    req.end();
-  })
-);
diff --git a/test/parallel/test-set-incoming-message-header.js b/test/parallel/test-set-incoming-message-header.js
index 1fab6cd1e5a724..9ac05a8138d445 100644
--- a/test/parallel/test-set-incoming-message-header.js
+++ b/test/parallel/test-set-incoming-message-header.js
@@ -4,23 +4,24 @@ require('../common');
 const { IncomingMessage } = require('http');
 const assert = require('assert');
 
-// Headers setter should be a No-Op
+// Headers setter function set a header correctly
 {
   const im = new IncomingMessage();
   im.headers = { key: 'value' };
-  assert.deepStrictEqual(im.headers, {});
+  assert.deepStrictEqual(im.headers, { key: 'value' });
 }
 
-// Trailers setter should be a No-Op
+// Trailers setter function set a header correctly
 {
   const im = new IncomingMessage();
   im.trailers = { key: 'value' };
-  assert.deepStrictEqual(im.trailers, {});
+  assert.deepStrictEqual(im.trailers, { key: 'value' });
 }
 
 // _addHeaderLines function set a header correctly
 {
   const im = new IncomingMessage();
+  im.headers = { key1: 'value1' };
   im._addHeaderLines(['key2', 'value2'], 2);
-  assert.deepStrictEqual(im.headers, { key2: 'value2' });
+  assert.deepStrictEqual(im.headers, { key1: 'value1', key2: 'value2' });
 }