diff --git a/validation.js b/validation.js
index 4174d77..727ad66 100644
--- a/validation.js
+++ b/validation.js
@@ -202,9 +202,9 @@ class Validation {
         for (const nameAttr of this.reqData) {
             const fields = this.form.querySelectorAll(`[name="${nameAttr}"]:where(input, select, textarea)`)
             for (const el of fields) {
-                // checkbox specfic
-                if (el.type === 'checkbox') {
-                    // combine all data-validation attrs and copy to all checks in the group
+                // combine all data-validation attr properties between
+                // check/radio groups and copy to all inputs in the group
+                if (el.type === 'checkbox' || el.type === 'radio') {
                     const checks = this.form.querySelectorAll(`input[name="${el.name}"]`)
                     let multiOptions = {}
                     for (const check of checks) {