diff --git a/core/tests/Drupal/Tests/Component/Datetime/DateTimePlusTest.php b/core/tests/Drupal/Tests/Component/Datetime/DateTimePlusTest.php
index 7dcb0a5..042302b 100644
--- a/core/tests/Drupal/Tests/Component/Datetime/DateTimePlusTest.php
+++ b/core/tests/Drupal/Tests/Component/Datetime/DateTimePlusTest.php
@@ -342,7 +342,7 @@ public function providerTestDateArrays() {
       array(array('year' => 2010, 'month' => 2, 'day' => 28, 'hour' => 10), 'Europe/Berlin', '2010-02-28T10:00:00+01:00'),
     );
 
-    // On 32-bit systems, timestamps are limited to 1970-2038.
+    // On 32-bit systems, timestamps are limited to 1901-2038.
     if (PHP_INT_SIZE !== 4) {
       // Create a date object in the distant past.
       $dates[] = array(array('year' => 1809, 'month' => 2, 'day' => 12), 'America/Chicago', '1809-02-12T00:00:00-06:00');