diff --git a/package/__tests__/config.js b/package/__tests__/config.js
index 9ba19425e..970d99064 100644
--- a/package/__tests__/config.js
+++ b/package/__tests__/config.js
@@ -16,29 +16,6 @@ describe('Config', () => {
     expect(config.publicPath).toEqual('/packs/')
   })
 
-  // also tests removal of extra slashes
-  test('public path with relative root', () => {
-    process.env.RAILS_ENV = 'development'
-    process.env.RAILS_RELATIVE_URL_ROOT = '/foo'
-    const config = require('../config')
-    expect(config.publicPath).toEqual('/foo/packs/')
-  })
-
-  test('public path with relative root without slash', () => {
-    process.env.RAILS_ENV = 'development'
-    process.env.RAILS_RELATIVE_URL_ROOT = 'foo'
-    const config = require('../config')
-    expect(config.publicPath).toEqual('/foo/packs/')
-  })
-
-  test('public path with asset host and relative root', () => {
-    process.env.RAILS_ENV = 'development'
-    process.env.RAILS_RELATIVE_URL_ROOT = '/foo/'
-    process.env.WEBPACKER_ASSET_HOST = 'http://foo.com/'
-    const config = require('../config')
-    expect(config.publicPath).toEqual('http://foo.com/foo/packs/')
-  })
-
   test('public path with asset host', () => {
     process.env.RAILS_ENV = 'development'
     process.env.WEBPACKER_ASSET_HOST = 'http://foo.com/'
diff --git a/package/config.js b/package/config.js
index 16ff25c62..c9c2d6f9c 100644
--- a/package/config.js
+++ b/package/config.js
@@ -27,16 +27,8 @@ config.outputPath = resolve(config.public_root_path, config.public_output_path)
 // Ensure that the publicPath includes our asset host so dynamic imports
 // (code-splitting chunks and static assets) load from the CDN instead of a relative path.
 const getPublicPath = () => {
-  const rootUrl = process.env.WEBPACKER_ASSET_HOST || '/'
-  let packPath = `${config.public_output_path}/`
-  // Add relative root prefix to pack path.
-  if (process.env.RAILS_RELATIVE_URL_ROOT) {
-    let relativeRoot = process.env.RAILS_RELATIVE_URL_ROOT
-    relativeRoot = relativeRoot.startsWith('/') ? relativeRoot.substr(1) : relativeRoot
-    packPath = `${ensureTrailingSlash(relativeRoot)}${packPath}`
-  }
-
-  return ensureTrailingSlash(rootUrl) + packPath
+  const rootUrl = ensureTrailingSlash(process.env.WEBPACKER_ASSET_HOST || '/')
+  return `${rootUrl}${config.public_output_path}/`
 }
 
 config.publicPath = getPublicPath()