diff --git a/core/lib/Drupal/Core/Cache/DatabaseBackend.php b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
index 6c78eeb..cde83e6 100644
--- a/core/lib/Drupal/Core/Cache/DatabaseBackend.php
+++ b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
@@ -230,7 +230,7 @@ class DatabaseBackend implements CacheBackendInterface {
         ->execute();
      }
      else {
-       // No minimum cache lifetime, flush all expired and temporary cache
+       // No minimum cache lifetime. Flush all expired and temporary cache
        // entries now.
       db_delete($this->bin)
         ->condition('expire', CACHE_PERMANENT, '<>')
@@ -252,11 +252,12 @@ class DatabaseBackend implements CacheBackendInterface {
       ->condition('expire', REQUEST_TIME, '<')
       ->execute();
 
-    // Clear old temporary cache items, 'old' is defined as older than the
+    // Clear old temporary cache items. 'Old' is defined as older than the
     // minimum cache lifetime, or 24 hours, whichever is the greatest.
     $old = max($cache_lifetime, 86400);
 
-    // Clear CACHE_TEMPORARY items that are older than the minimum cache lifetime.
+    // Clear CACHE_TEMPORARY items that are older than the minimum cache
+    // lifetime.
     db_delete($this->bin)
       ->condition('expire', CACHE_TEMPORARY)
       ->condition('created', REQUEST_TIME - $old, '<')
diff --git a/core/modules/system/tests/cache.test b/core/modules/system/tests/cache.test
index 6964e40..d0adf64 100644
--- a/core/modules/system/tests/cache.test
+++ b/core/modules/system/tests/cache.test
@@ -317,7 +317,7 @@ class CacheClearCase extends CacheTestCase {
   }
 
   /**
-   * Test CACHE_TEMPORARY behaviour.
+   * Tests CACHE_TEMPORARY behavior.
    */
   function testCacheTemporary() {
     $cache = cache($this->default_bin);
@@ -327,7 +327,7 @@ class CacheClearCase extends CacheTestCase {
     $this->assertTrue($this->checkCacheExists('test_cid_clear1', $this->default_value));
     $this->assertTrue($this->checkCacheExists('test_cid_clear2', $this->default_value));
 
-    // Expire all items in the bin, only the temporary item should be removed.
+    // Expire all items in the bin. Only the temporary item should be removed.
     $cache->expire();
     $this->assertFalse($this->checkCacheExists('test_cid_clear1', $this->default_value));
     $this->assertTrue($this->checkCacheExists('test_cid_clear2', $this->default_value));
@@ -335,7 +335,7 @@ class CacheClearCase extends CacheTestCase {
     // Set the temporary item again.
     $cache->set('test_cid_clear1', $this->default_value, CACHE_TEMPORARY);
 
-    // Now call the garbageCollection method, neither item should be removed.
+    // Now call the garbageCollection method. Neither item should be removed.
     $cache->garbageCollection();
     $this->assertTrue($this->checkCacheExists('test_cid_clear1', $this->default_value));
     $this->assertTrue($this->checkCacheExists('test_cid_clear2', $this->default_value));