diff --git a/openy_field_hours/modules/openy_field_custom_hours/src/Plugin/Field/FieldType/CustomHoursItem.php b/openy_field_hours/modules/openy_field_custom_hours/src/Plugin/Field/FieldType/CustomHoursItem.php
index 7278ff20..e424264a 100644
--- a/openy_field_hours/modules/openy_field_custom_hours/src/Plugin/Field/FieldType/CustomHoursItem.php
+++ b/openy_field_hours/modules/openy_field_custom_hours/src/Plugin/Field/FieldType/CustomHoursItem.php
@@ -70,7 +70,7 @@ public static function schema(FieldStorageDefinitionInterface $field_definition)
    */
   public function isEmpty() {
     $values = $this->getValue();
-    if ($values['hours_label'] !== '') {
+    if (isset($values['hours_label']) && $values['hours_label'] !== '') {
       return FALSE;
     }
     return TRUE;