diff --git a/src/app/launcher.php b/src/app/launcher.php
index 1318b47..f1cea96 100644
--- a/src/app/launcher.php
+++ b/src/app/launcher.php
@@ -7,11 +7,13 @@ use nur\sery\StateException;
 
 class launcher {
   static function launch(string $appClass, ...$args): int {
-    $cmd = new Cmd([
-      __DIR__."/../../lib/_launch.php",
-      $appClass,
-      ...$args,
-    ]);
+    global $_composer_bin_dir;
+    if (isset($_composer_bin_dir)) {
+      $launch_php = "$_composer_bin_dir/_launch.php";
+    } else {
+      $launch_php = __DIR__."/../../lib/_launch.php";
+    }
+    $cmd = new Cmd([$launch_php, $appClass, ...$args]);
     //$cmd->addRedir("null");
     $cmd->passthru($exitcode);
     return $exitcode;