diff --git a/src/DrupalMemcache.php b/src/DrupalMemcache.php
index 9089e7d..2a618ed 100644
--- a/src/DrupalMemcache.php
+++ b/src/DrupalMemcache.php
@@ -91,7 +91,7 @@ class DrupalMemcache extends DrupalMemcacheBase {
     $results = @$this->memcache->get($full_keys);
 
     if (!empty($php_errormsg)) {
-      register_shutdown_function([$this, 'deferWarning'], 'Exception caught in DrupalMemcache::getMulti: !msg', ['!msg' => $php_errormsg]);
+      $this->logger->warning('Exception caught in DrupalMemcache::getMulti: !msg', ['!msg' => $php_errormsg]);
       $php_errormsg = '';
     }
 
diff --git a/src/DrupalMemcacheBase.php b/src/DrupalMemcacheBase.php
index 2feb2b9..932df22 100644
--- a/src/DrupalMemcacheBase.php
+++ b/src/DrupalMemcacheBase.php
@@ -78,7 +78,7 @@ abstract class DrupalMemcacheBase implements DrupalMemcacheInterface {
     $result = @$this->memcache->get($full_key);
 
     if (!empty($php_errormsg)) {
-      register_shutdown_function([$this, 'deferWarning'], 'Exception caught in DrupalMemcacheBase::get: !msg', ['!msg' => $php_errormsg]);
+      $this->logger->warning('Exception caught in DrupalMemcacheBase::get: !msg', ['!msg' => $php_errormsg]);
       $php_errormsg = '';
     }
     ini_set('track_errors', $track_errors);
@@ -118,19 +118,4 @@ abstract class DrupalMemcacheBase implements DrupalMemcacheInterface {
     $this->memcache->flush();
   }
 
-  /**
-   * Deferred message logging.
-   *
-   * In bootstrap phase, where watchdog is non-functional. This method can be
-   * registered so the message gets recorded at the end of the page load.
-   *
-   * @param string $message
-   *   The message to log.
-   * @param array $context
-   *   The variables associated with the message.
-   */
-  protected function deferWarning($message, array $context) {
-    $this->logger->warn($message, $context);
-  }
-
 }
diff --git a/src/DrupalMemcacheFactory.php b/src/DrupalMemcacheFactory.php
index 87cf07f..c18759a 100644
--- a/src/DrupalMemcacheFactory.php
+++ b/src/DrupalMemcacheFactory.php
@@ -122,10 +122,7 @@ class DrupalMemcacheFactory {
             }
 
             if (!$init) {
-              // We can't use watchdog because this happens in a bootstrap phase
-              // where watchdog is non-functional. Register a shutdown handler
-              // instead so it gets recorded at the end of page load.
-              register_shutdown_function([$this, 'deferWarning'], 'Failed to connect to memcache server: !server', ['!server' => $s]);
+              $this->logger->warning('Failed to connect to memcache server: !server', ['!server' => $s]);
               $this->failedConnectionCache[$s] = FALSE;
             }
           }
@@ -198,19 +195,4 @@ class DrupalMemcacheFactory {
     $this->memcacheCache = array();
   }
 
-  /**
-   * Deferred message logging.
-   *
-   * In bootstrap phase, where watchdog is non-functional. This method can be
-   * registered so the message gets recorded at the end of the page load.
-   *
-   * @param string $message
-   *   The message to log.
-   * @param array $context
-   *   The variables associated with the message.
-   */
-  protected function deferWarning($message, array $context) {
-    $this->logger->warn($message, $context);
-  }
-
 }