diff --git a/src/LogBehavior.php b/src/LogBehavior.php
index 2b1346d4f..08df14df8 100644
--- a/src/LogBehavior.php
+++ b/src/LogBehavior.php
@@ -98,11 +98,12 @@ public function afterError(ExecEvent $event): void
     public function workerStart(cli\WorkerEvent $event): void
     {
         $workerPid = $event->sender->getWorkerPid();
-        if (null !== $workerPid) {
-            $title = 'Worker ' . $workerPid;
-            Yii::info("$title is started.", Queue::class);
-            Yii::beginProfile($title, Queue::class);
+        if (null === $workerPid) {
+            $workerPid = '{PID not found}';
         }
+        $title = 'Worker ' . $workerPid;
+        Yii::info("$title is started.", Queue::class);
+        Yii::beginProfile($title, Queue::class);
 
         if ($this->autoFlush) {
             Yii::getLogger()->flush(true);
@@ -116,11 +117,12 @@ public function workerStart(cli\WorkerEvent $event): void
     public function workerStop(cli\WorkerEvent $event): void
     {
         $workerPid = $event->sender->getWorkerPid();
-        if (null !== $workerPid) {
-            $title = 'Worker ' . $workerPid;
-            Yii::endProfile($title, Queue::class);
-            Yii::info("$title is stopped.", Queue::class);
+        if (null === $workerPid) {
+            $workerPid = '{PID not found}';
         }
+        $title = 'Worker ' . $workerPid;
+        Yii::endProfile($title, Queue::class);
+        Yii::info("$title is stopped.", Queue::class);
 
         if ($this->autoFlush) {
             Yii::getLogger()->flush(true);