diff --git a/src/dom/dom.js b/src/dom/dom.js
index a845db2203..9bd87a1b97 100644
--- a/src/dom/dom.js
+++ b/src/dom/dom.js
@@ -952,9 +952,17 @@ p5.prototype.createRadio = function() {
         }
       }
     } else {
+      // forEach loop to uncheck all radio buttons before
+      // setting any one as checked.
+      self._getOptionsArray().forEach(option => {
+        option.checked = false;
+        option.removeAttribute('checked');
+      });
+
       for (const option of self._getOptionsArray()) {
         if (option.value === value) {
           option.setAttribute('checked', true);
+          option.checked = true;
           result = option;
         }
       }