diff --git a/web/compatibility.js b/web/compatibility.js
index 66e46b51b..26405ad8f 100644
--- a/web/compatibility.js
+++ b/web/compatibility.js
@@ -14,7 +14,7 @@
   }
 
   function subarray(start, end) {
-    return this.slice(start, end);
+    return new TypedArray(this.slice(start, end));
   }
 
   function setArrayOffset(array, offset) {