diff --git a/server/build/webpack.js b/server/build/webpack.js
index d080b1787ffeb..6fd1d8ab1d72d 100644
--- a/server/build/webpack.js
+++ b/server/build/webpack.js
@@ -47,7 +47,7 @@ export default async function createCompiler (dir, { buildId, dev = false, quiet
       ]
     }
 
-    const pages = await glob('pages/**/*.js', { cwd: dir })
+    const pages = await glob(config.pagesGlobPattern, { cwd: dir })
     const devPages = pages.filter((p) => p === 'pages/_document.js' || p === 'pages/_error.js')
 
     // In the dev environment, on-demand-entry-handler will take care of
diff --git a/server/config.js b/server/config.js
index 02812bf57c16e..7c61fdd384d52 100644
--- a/server/config.js
+++ b/server/config.js
@@ -10,7 +10,8 @@ const defaultConfig = {
   distDir: '.next',
   assetPrefix: '',
   configOrigin: 'default',
-  useFileSystemPublicRoutes: true
+  useFileSystemPublicRoutes: true,
+  pagesGlobPattern: 'pages/**/*.js'
 }
 
 export default function getConfig (dir, customConfig) {