diff --git a/Stopwatch/Stopwatch.php b/Stopwatch/Stopwatch.php
index 1f7e3f4..4f1d84b 100644
--- a/Stopwatch/Stopwatch.php
+++ b/Stopwatch/Stopwatch.php
@@ -74,7 +74,14 @@ private function flushIfTimersLimitReached(): void
     {
         $timersCount = count(pinba_timers_get(PINBA_ONLY_STOPPED_TIMERS));
         if ($timersCount >= self::FLUSH_TIMERS_LIMIT) {
-            pinba_flush(null, PINBA_FLUSH_ONLY_STOPPED_TIMERS);
+            pinba_flush($this->getScriptName(), PINBA_FLUSH_ONLY_STOPPED_TIMERS);
         }
     }
+
+    private function getScriptName(): string
+    {
+        $pinbaInfo = pinba_get_info();
+
+        return $pinbaInfo['script_name'] ?? '';
+    }
 }
diff --git a/meta/phpstan/stub.php b/meta/phpstan/stub.php
index 2f31349..52bdbe8 100644
--- a/meta/phpstan/stub.php
+++ b/meta/phpstan/stub.php
@@ -33,7 +33,7 @@ function pinba_timers_get(int $flag = 0): array
 }
 
 if (!function_exists('pinba_flush')) {
-    function pinba_flush(?string $scriptName = null, int $flags = 0): void
+    function pinba_flush(string $scriptName = '', int $flags = 0): void
     {
     }
 }