diff --git a/assets/uswds/js/uswds.js b/assets/uswds/js/uswds.js
index 06daa22..fb870ae 100644
--- a/assets/uswds/js/uswds.js
+++ b/assets/uswds/js/uswds.js
@@ -628,7 +628,7 @@ var trim = String.prototype.trim ? function (str) {
   return str.replace(RE_TRIM, '');
 };
 var queryById = function (id) {
-  return this.querySelector('[id="' + id.replace(/"/g, '\\"') + '"]');
+  return this.querySelector('[id="' + id.replace(/\\/g, '\\\\').replace(/"/g, '\\"') + '"]');
 };
 module.exports = function resolveIds(ids, doc) {
   if (typeof ids !== 'string') {