diff --git a/test/DateBonduariesOptions.jsx b/test/DateBonduariesOptions.jsx
index 37a6d74f..48cccee4 100644
--- a/test/DateBonduariesOptions.jsx
+++ b/test/DateBonduariesOptions.jsx
@@ -38,7 +38,7 @@ export default function DateBonduariesOptions({
         />
          
         <button
-          onClick={() => setMinDate(null)}
+          onClick={() => setMinDate(undefined)}
           type="button"
         >
           Clear
@@ -56,7 +56,7 @@ export default function DateBonduariesOptions({
         />
         &nbsp;
         <button
-          onClick={() => setMaxDate(null)}
+          onClick={() => setMaxDate(undefined)}
           type="button"
         >
           Clear