diff --git a/EventListener/DispatchPcntlSignalListener.php b/EventListener/DispatchPcntlSignalListener.php
index 37b88ca1..258ce644 100644
--- a/EventListener/DispatchPcntlSignalListener.php
+++ b/EventListener/DispatchPcntlSignalListener.php
@@ -21,6 +21,10 @@ class DispatchPcntlSignalListener implements EventSubscriberInterface
 {
     public function onWorkerRunning(): void
     {
+        if (!\function_exists('pcntl_signal_dispatch')) {
+            return;
+        }
+
         pcntl_signal_dispatch();
     }