diff --git a/src/core/js/ext_xls_download.js b/src/core/js/ext_xls_download.js
index 904d05ac44c247dd53fb3282736abb9d72b81da6..ebeb2ac94ca7bd84cc41ffef7bf3d1abc1982875 100644
--- a/src/core/js/ext_xls_download.js
+++ b/src/core/js/ext_xls_download.js
@@ -71,7 +71,7 @@ var caosdb_table_export = new function () {
      * @return {string} cleaned up content
      */
     this._clean_cell = function(raw) {
-        return raw.replaceAll("\t"," ").replaceAll("\n"," ").replaceAll("\r"," ").replaceAll("\0o36"," ").replaceAll("\0o25"," ")
+        return raw.replaceAll("\t"," ").replaceAll("\n"," ").replaceAll("\r"," ").replaceAll("\x1E"," ").replaceAll("\x15"," ")
     }
 
     /**