diff --git a/tests/model/DateTest.php b/tests/model/DateTest.php
index 1e805c2ca..e4f4498d6 100644
--- a/tests/model/DateTest.php
+++ b/tests/model/DateTest.php
@@ -188,8 +188,8 @@ class DateTest extends SapphireTest {
 		SS_Datetime::set_mock_now('2000-12-31 00:00:00');
 
 		$this->assertEquals(
-			'in 100 years', 
-			DBField::create_field('Date', '2100-12-31')->Ago(),
+			'in 10 years', 
+			DBField::create_field('Date', '2010-12-31')->Ago(),
 			'Exact past match on years'
 		);
 
diff --git a/tests/model/DatetimeTest.php b/tests/model/DatetimeTest.php
index 12246bc29..0c6ab8a83 100644
--- a/tests/model/DatetimeTest.php
+++ b/tests/model/DatetimeTest.php
@@ -135,8 +135,8 @@ class SS_DatetimeTest extends SapphireTest {
 		SS_Datetime::set_mock_now('2000-12-31 00:00:00');
 
 		$this->assertEquals(
-			'in 100 years', 
-			DBField::create_field('SS_Datetime', '2100-12-31 12:00:00')->Ago(),
+			'in 10 years', 
+			DBField::create_field('SS_Datetime', '2010-12-31 12:00:00')->Ago(),
 			'Exact past match on years'
 		);