diff --git a/src/Monolog/Processor/MemoryPeakUsageProcessor.php b/src/Monolog/Processor/MemoryPeakUsageProcessor.php
index cb2ca210..77e03240 100644
--- a/src/Monolog/Processor/MemoryPeakUsageProcessor.php
+++ b/src/Monolog/Processor/MemoryPeakUsageProcessor.php
@@ -11,17 +11,14 @@
 
 namespace Monolog\Processor;
 
-use Monolog\Processor\MemoryProcessor;
-
 /**
  * Injects memory_get_peak_usage in all records
  *
- * @see Monolog\Processor\MemoryProcessor__construct() for options
+ * @see Monolog\Processor\MemoryProcessor::__construct() for options
  * @author Rob Jensen
  */
 class MemoryPeakUsageProcessor extends MemoryProcessor
 {
-
     /**
      * @param array $record
      * @return array
@@ -29,7 +26,7 @@ class MemoryPeakUsageProcessor extends MemoryProcessor
     public function __invoke(array $record)
     {
         $bytes = memory_get_peak_usage($this->realUsage);
-        $formatted = MemoryProcessor::formatBytes($bytes);
+        $formatted = self::formatBytes($bytes);
 
         $record['extra'] = array_merge(
             $record['extra'],
diff --git a/src/Monolog/Processor/MemoryProcessor.php b/src/Monolog/Processor/MemoryProcessor.php
index e2efc7b8..28daa28c 100644
--- a/src/Monolog/Processor/MemoryProcessor.php
+++ b/src/Monolog/Processor/MemoryProcessor.php
@@ -13,11 +13,11 @@ namespace Monolog\Processor;
 
 /**
  * Some methods that are common for all memory processors
+ *
  * @author Rob Jensen
  */
 class MemoryProcessor
 {
-
     protected $realUsage;
 
     /**
@@ -34,18 +34,17 @@ class MemoryProcessor
      * @param int $bytes
      * @return string
      */
-    public static function formatBytes($bytes)
+    protected static function formatBytes($bytes)
     {
         $bytes = (int) $bytes;
+
         if ($bytes > 1024*1024) {
-            $bytes = round($bytes/1024/1024, 2).' MB';
+            return round($bytes/1024/1024, 2).' MB';
         } elseif ($bytes > 1024) {
-            $bytes = round($bytes/1024, 2).' KB';
-        } else {
-            $bytes .= ' B';
+            return round($bytes/1024, 2).' KB';
         }
 
-        return $bytes;
+        return $bytes . ' B';
     }
 
 }
diff --git a/src/Monolog/Processor/MemoryUsageProcessor.php b/src/Monolog/Processor/MemoryUsageProcessor.php
index bcbed6b4..0867459f 100644
--- a/src/Monolog/Processor/MemoryUsageProcessor.php
+++ b/src/Monolog/Processor/MemoryUsageProcessor.php
@@ -11,16 +11,14 @@
 
 namespace Monolog\Processor;
 
-use Monolog\Processor\MemoryProcessor;
-
 /**
  * Injects memory_get_usage in all records
- * @see Monolog\Processor\MemoryProcessor__construct() for options
+ *
+ * @see Monolog\Processor\MemoryProcessor::__construct() for options
  * @author Rob Jensen
  */
 class MemoryUsageProcessor extends MemoryProcessor
 {
-
     /**
      * @param array $record
      * @return array
@@ -28,7 +26,7 @@ class MemoryUsageProcessor extends MemoryProcessor
     public function __invoke(array $record)
     {
         $bytes = memory_get_usage($this->realUsage);
-        $formatted = MemoryProcessor::formatBytes($bytes);
+        $formatted = self::formatBytes($bytes);
 
         $record['extra'] = array_merge(
             $record['extra'],