diff --git a/jquery.validate.unobtrusive.js b/jquery.validate.unobtrusive.js
index 1b0de12..810ec0a 100644
--- a/jquery.validate.unobtrusive.js
+++ b/jquery.validate.unobtrusive.js
@@ -24,7 +24,7 @@
 
     function escapeAttributeValue(value) {
         // As mentioned on http://api.jquery.com/category/selectors/
-        return value.replace(/([!"#$%&'()*+,./:;<=>?@\[\\\]^`{|}~])/g, "\\$1");
+        return value.replace(/([!"#$%&'()*+,./:;<=>?@\[\\\]^`{|}~])/g, "\\\\$1");
     }
 
     function getModelPrefix(fieldName) {