diff --git a/core/modules/migrate_drupal/config/install/migrate.migration.d6_system_maintenance.yml b/core/modules/migrate_drupal/config/install/migrate.migration.d6_system_maintenance.yml
index e452989..11bb9c5 100644
--- a/core/modules/migrate_drupal/config/install/migrate.migration.d6_system_maintenance.yml
+++ b/core/modules/migrate_drupal/config/install/migrate.migration.d6_system_maintenance.yml
@@ -1,5 +1,5 @@
 id: d6_system_maintenance
-label: Drupal 6 maintainence page configuration
+label: Drupal 6 maintenance page configuration
 migration_groups:
   - Drupal 6
 source:
diff --git a/core/modules/page_cache/src/Tests/PageCacheTest.php b/core/modules/page_cache/src/Tests/PageCacheTest.php
index 7faa45e..47a0941 100644
--- a/core/modules/page_cache/src/Tests/PageCacheTest.php
+++ b/core/modules/page_cache/src/Tests/PageCacheTest.php
@@ -187,7 +187,7 @@ function testConditionalRequests() {
     $this->drupalLogin($user);
     $this->drupalGet('', array(), array('If-Modified-Since: ' . $last_modified, 'If-None-Match: ' . $etag));
     $this->assertResponse(200, 'Conditional request returned 200 OK for authenticated user.');
-    $this->assertFalse($this->drupalGetHeader('X-Drupal-Cache'), 'Absense of Page was not cached.');
+    $this->assertFalse($this->drupalGetHeader('X-Drupal-Cache'), 'Absence of Page was not cached.');
   }
 
   /**
diff --git a/core/tests/Drupal/Tests/Component/PhpStorage/PhpStorageTestBase.php b/core/tests/Drupal/Tests/Component/PhpStorage/PhpStorageTestBase.php
index fabf301..53492d8 100644
--- a/core/tests/Drupal/Tests/Component/PhpStorage/PhpStorageTestBase.php
+++ b/core/tests/Drupal/Tests/Component/PhpStorage/PhpStorageTestBase.php
@@ -54,7 +54,7 @@ public function assertCRUD($php) {
     $this->assertTrue($php->exists($name), 'Exists works correctly');
 
     // Delete the file, and then ensure exists() returns FALSE.
-    $this->assertTrue($php->delete($name), 'Delete suceeded');
+    $this->assertTrue($php->delete($name), 'Delete succeeded');
     $this->assertFalse($php->exists($name), 'Delete deleted file');
 
     // Ensure delete() can be called on a non-existing file. It should return