diff --git a/src/js/utils/str.js b/src/js/utils/str.js
index bdb2c3f8a..f7495e5d9 100644
--- a/src/js/utils/str.js
+++ b/src/js/utils/str.js
@@ -62,10 +62,18 @@ export const titleCaseEquals = function(str1, str2) {
  *          Whether the string contains a Hex Code
  */
 export const containsHexCode = (string) => {
-  return /[a-zA-Z\040]*(&#x[0-9a-fA-F]{2,4};)[a-zA-Z\040]*/.test(string);
+  return /(&#x[0-9a-fA-F]{2,4};)/.test(string);
 };
 
+/**
+ *
+ * @param {string} string
+ *        The string that will be sanitized
+ *
+ * @return {string}
+ *        Modified string without problematic characters
+ */
 export const sanitizeString = (string) => {
-  string = string.replace(/[^a-z0-9 áéíóúñü\&#;_]/gim, '');
+  string = string.replace(/(?!&#x[0-9a-fA-F]{2,4};)([&\/><{}`=&])/, '');
   return string.trim();
 };