diff --git a/app/src/asset/pdf/app_options.js b/app/src/asset/pdf/app_options.js
index 78b548a8b..fba72d3c9 100644
--- a/app/src/asset/pdf/app_options.js
+++ b/app/src/asset/pdf/app_options.js
@@ -198,10 +198,7 @@ const defaultOptions = {
   },
   cMapUrl: {
     /** @type {string} */
-    value:
-      typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION')
-        ? '../external/bcmaps/'
-        : 'cmaps/', // NOTE
+    value: 'cmaps/', // NOTE
     kind: OptionKind.API,
   },
   disableAutoFetch: {