diff --git a/lib/Logging/LogHandler.php b/lib/Logging/LogHandler.php
index 47d183ab33..4092bb40e3 100644
--- a/lib/Logging/LogHandler.php
+++ b/lib/Logging/LogHandler.php
@@ -19,18 +19,12 @@ class LogHandler extends AbstractProcessingHandler {
    */
   const DAYS_TO_KEEP_LOGS = 30;
 
-  /** @var callable */
+  /** @var callable|null */
   private $rand_function;
 
   public function __construct($level = \MailPoetVendor\Monolog\Logger::DEBUG, $bubble = \true, $rand_function = null) {
     parent::__construct($level, $bubble);
-    if (!$rand_function) {
-      $this->rand_function = function($min, $max) {
-        return rand($min, $max);
-      };
-    } else {
-      $this->rand_function = $rand_function;
-    }
+    $this->rand_function = $rand_function;
   }
 
   protected function write(array $record) {
@@ -53,7 +47,10 @@ class LogHandler extends AbstractProcessingHandler {
   }
 
   private function getRandom() {
-    return call_user_func($this->rand_function, 0, 100);
+    if ($this->rand_function) {
+      return call_user_func($this->rand_function, 0, 100);
+    }
+    return rand(0, 100);
   }
 
   private function purgeOldLogs() {