diff --git a/src/digital-components/button-question/button-question.vue b/src/digital-components/button-question/button-question.vue
index 4c60b0708..e874a40f6 100644
--- a/src/digital-components/button-question/button-question.vue
+++ b/src/digital-components/button-question/button-question.vue
@@ -209,7 +209,7 @@ export default {
     },
     methods: {
         formatString(str) {
-            return str?.replaceAll(" ", "-");
+            return String(str).replaceAll(" ", "-");
         },
         setLastValuePushedToGa(lastValuePushedToGa) {
             this.lastValuePushedToGa = lastValuePushedToGa;