diff --git a/core/modules/field_ui/src/Tests/ManageFieldsTest.php b/core/modules/field_ui/src/Tests/ManageFieldsTest.php
index 25d5d08..2b519ad 100644
--- a/core/modules/field_ui/src/Tests/ManageFieldsTest.php
+++ b/core/modules/field_ui/src/Tests/ManageFieldsTest.php
@@ -538,7 +538,7 @@ function testLockedField() {
     // Make sure the cardinality field is not available once the field is
     // locked.
     $this->assertNoField('cardinality', 'The cardinality field is not available for the locked field.');
-    $this->assertText(format_string('The field !field_name is locked and cannot be edited.', array('!field_name' => $field_name)));
+    $this->assertRaw(format_string('The field %field_name is locked and cannot be edited.', array('%field_name' => $field_name)));
   }
 
   /**