diff --git a/src/Actions/ExportToExcel.php b/src/Actions/ExportToExcel.php
index 4abc8f6..5d3214d 100644
--- a/src/Actions/ExportToExcel.php
+++ b/src/Actions/ExportToExcel.php
@@ -305,6 +305,8 @@ protected function replaceFieldValuesWhenOnResource(Model $model, array $only =
         foreach (array_diff($only, array_keys($row)) as $attribute) {
             if ($model->{$attribute}) {
                 $row[$attribute] = $model->{$attribute};
+            } else {
+                $row[$attribute] = '';
             }
         }