diff --git a/modules/islandora_doi_datacite/islandora_doi_datacite.drush.inc b/modules/islandora_doi_datacite/islandora_doi_datacite.drush.inc
index 62a10a3..0c52c2b 100644
--- a/modules/islandora_doi_datacite/islandora_doi_datacite.drush.inc
+++ b/modules/islandora_doi_datacite/islandora_doi_datacite.drush.inc
@@ -83,6 +83,9 @@ function drush_islandora_doi_datacite_assign_dois_preflight() {
     $errors = islandora_doi_datacite_check_required_values($dc_values);
     $error_file_path = $input_file_path . '.errors';
     $passed_file_path = $input_file_path . '.passed';
+    if (file_exists($passed_file_path)) {
+      unlink($passed_file_path);
+    }
     if (count($errors)) {
       drush_log(dt("!pid does not meet DataCite's metadata requirements", array('!pid' => $pid)), 'warning');
       foreach ($errors as $error) {