diff --git a/app/assets/javascripts/archive/pdf/viewer.js b/app/assets/javascripts/archive/pdf/viewer.js
index 5edbd04..6539ef4 100644
--- a/app/assets/javascripts/archive/pdf/viewer.js
+++ b/app/assets/javascripts/archive/pdf/viewer.js
@@ -4640,7 +4640,7 @@ var defaultOptions = {
     kind: OptionKind.API
   },
   cMapUrl: {
-    value: "../web/cmaps/",
+    value: "/assets/archive/pdf/bcmaps/",
     kind: OptionKind.API
   },
   disableAutoFetch: {