diff --git a/catalog/app/components/Preview/loaders/Igv.ts b/catalog/app/components/Preview/loaders/Igv.ts
index 9e5eca266e5..ad17f40abdf 100644
--- a/catalog/app/components/Preview/loaders/Igv.ts
+++ b/catalog/app/components/Preview/loaders/Igv.ts
@@ -20,6 +20,7 @@ const traverseUrls = (fn: (v: any) => any, json: JsonRecord) =>
       reference: R.evolve({
         fastaURL: fn,
         indexURL: fn,
+        compressedIndexURL: fn,
         cytobandURL: fn,
         aliasURL: fn,
       }),