diff --git a/src/display/api.js b/src/display/api.js
index eb4089276..811a2fe61 100644
--- a/src/display/api.js
+++ b/src/display/api.js
@@ -90,7 +90,8 @@ if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('GENERIC')) {
     });
   }) : null;
 
-  if (!fallbackWorkerSrc && typeof document !== 'undefined') {
+  if (!fallbackWorkerSrc && typeof document === 'object' &&
+      'currentScript' in document) {
     const pdfjsFilePath = document.currentScript && document.currentScript.src;
     if (pdfjsFilePath) {
       fallbackWorkerSrc =
diff --git a/src/shared/compatibility.js b/src/shared/compatibility.js
index 13122af13..2efb4d1ec 100644
--- a/src/shared/compatibility.js
+++ b/src/shared/compatibility.js
@@ -54,25 +54,6 @@ const hasDOM = typeof window === 'object' && typeof document === 'object';
   };
 })();
 
-// Provides document.currentScript support
-// Support: IE, Chrome<29.
-(function checkCurrentScript() {
-  if (!hasDOM) {
-    return;
-  }
-  if ('currentScript' in document) {
-    return;
-  }
-  Object.defineProperty(document, 'currentScript', {
-    get() {
-      var scripts = document.getElementsByTagName('script');
-      return scripts[scripts.length - 1];
-    },
-    enumerable: true,
-    configurable: true,
-  });
-})();
-
 // Provides support for ChildNode.remove in legacy browsers.
 // Support: IE.
 (function checkChildNodeRemove() {