diff --git a/core/modules/search/tests/Drupal/search/Tests/SearchExpressionTest.php b/core/modules/search/tests/Drupal/search/Tests/SearchExpressionTest.php
index 18a1b52..27f59ed 100644
--- a/core/modules/search/tests/Drupal/search/Tests/SearchExpressionTest.php
+++ b/core/modules/search/tests/Drupal/search/Tests/SearchExpressionTest.php
@@ -80,7 +80,7 @@ public function testInsertExtract($case_0, $case_1, $case_2, $case_3) {
     }
 
     $after_clear = $after_insert->insert($case_0);
-    $this->assertEquals(trim($base_expression, $after_clear->getExpression()), 'After clearing, base expression is not restored.');
+    $this->assertEquals($base_expression, $after_clear->getExpression(), 'After clearing, base expression is not restored.');
 
     $cleared = $after_clear->extract($case_0);
     $this->assertFalse(isset($cleared), 'After clearing, value could be retrieved.');