diff --git a/gulpfile.js b/gulpfile.js
index 78c655e1f..d7ec6eae8 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -296,20 +296,6 @@ function createComponentsBundle(defines) {
     .pipe(replaceJSRootName(componentsAMDName));
 }
 
-function createCompatibilityBundle(defines) {
-  var compatibilityAMDName = 'pdfjs-dist/web/compatibility';
-  var compatibilityOutputName = 'compatibility.js';
-
-  var compatibilityFileConfig = createWebpackConfig(defines, {
-    filename: compatibilityOutputName,
-    library: compatibilityAMDName,
-    libraryTarget: 'umd',
-    umdNamedDefine: true,
-  });
-  return gulp.src('./web/compatibility.js')
-    .pipe(webpack2Stream(compatibilityFileConfig));
-}
-
 function checkFile(path) {
   try {
     var stat = fs.lstatSync(path);
@@ -642,7 +628,6 @@ gulp.task('components', ['buildnumber'], function () {
 
   return merge([
     createComponentsBundle(defines).pipe(gulp.dest(COMPONENTS_DIR)),
-    createCompatibilityBundle(defines).pipe(gulp.dest(COMPONENTS_DIR)),
     gulp.src(COMPONENTS_IMAGES).pipe(gulp.dest(COMPONENTS_DIR + 'images')),
     preprocessCSS('web/pdf_viewer.css', 'components', defines, true)
         .pipe(gulp.dest(COMPONENTS_DIR)),
@@ -1040,7 +1025,6 @@ gulp.task('lib', ['buildnumber'], function () {
       'web/*.js',
       '!web/pdfjs.js',
       '!web/viewer.js',
-      '!web/compatibility.js',
     ], { base: '.', }),
     gulp.src('test/unit/*.js', { base: '.', }),
   ]).pipe(transform('utf8', preprocess))
diff --git a/web/compatibility.js b/web/compatibility.js
deleted file mode 100644
index 8621afe31..000000000
--- a/web/compatibility.js
+++ /dev/null
@@ -1,17 +0,0 @@
-/* Copyright 2017 Mozilla Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-'use strict';
-
-require('../src/shared/compatibility.js');