diff --git a/core/modules/locale/src/Tests/LocaleStringIsSafeTest.php b/core/modules/locale/src/Tests/LocaleStringIsSafeTest.php
index fef06a0..424ce06 100644
--- a/core/modules/locale/src/Tests/LocaleStringIsSafeTest.php
+++ b/core/modules/locale/src/Tests/LocaleStringIsSafeTest.php
@@ -51,6 +51,9 @@ public function testLocaleStringIsSafe() {
 
   /**
    * Tests if a translated and tokenized string is properly escaped by Twig.
+   *
+   * In each assert* call we add a new line at the expected result to match the
+   * newline at the end of the template file.
    */
   public function testLocalizedTokenizedString() {
     $tests_to_do = array(
@@ -71,7 +74,7 @@ public function testLocalizedTokenizedString() {
       // original and the rendered version should be different.
       $this->assertNotEqual(
         $rendered_original_string,
-        $original_string,
+        $original_string . "\n",
         'Security test ' . $i . ' before translation'
       );
 
@@ -82,7 +85,7 @@ public function testLocalizedTokenizedString() {
       // and should be the same as the original.
       $this->assertEqual(
         $rendered_safe_string,
-        $original_string,
+        $original_string . "\n",
         'Security test ' . $i . ' after translation before token replacement'
       );
 
@@ -94,7 +97,7 @@ public function testLocalizedTokenizedString() {
       // anymore. Check it is escaped the way we expect.
       $this->assertEqual(
         $rendered_unsafe_string,
-        $test['replaced'],
+        $test['replaced'] . "\n",
         'Security test ' . $i . ' after translation  after token replacement'
       );
     }