diff --git a/lib/PicoFeed/Parser/DateParser.php b/lib/PicoFeed/Parser/DateParser.php
index b753a37..f3233fd 100644
--- a/lib/PicoFeed/Parser/DateParser.php
+++ b/lib/PicoFeed/Parser/DateParser.php
@@ -98,7 +98,7 @@ public function getValidDate($format, $value)
         if ($date !== false) {
             $errors = DateTime::getLastErrors();
 
-            if ($errors['error_count'] === 0 && $errors['warning_count'] === 0) {
+            if (!$errors || ($errors['error_count'] === 0 && $errors['warning_count'] === 0)) {
                 return $date;
             }
         }