diff --git a/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValue.js b/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValue.js
index f94338611..57c9d4087 100644
--- a/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValue.js
+++ b/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValue.js
@@ -20,7 +20,7 @@ const QuestionCopyValue = ({ question, value, siblings, copyValue }) => {
 QuestionCopyValue.propTypes = {
   question: PropTypes.object.isRequired,
   value: PropTypes.object.isRequired,
-  siblings: PropTypes.object.isRequired,
+  siblings: PropTypes.array.isRequired,
   copyValue: PropTypes.func.isRequired
 }