diff --git a/library/CM/Process.php b/library/CM/Process.php
index <HASH>..<HASH> 100644
--- a/library/CM/Process.php
+++ b/library/CM/Process.php
@@ -69,7 +69,7 @@ class CM_Process {
      * @param int $signal
      */
     public function killChildren($signal) {
-        foreach ($this->_forkHandlerList as $processId => $workload) {
+        foreach ($this->_forkHandlerList as $processId => $forkHandler) {
             posix_kill($processId, $signal);
         }
     }
Rename $workload to $forkHandler in loop