diff --git a/uncloud/hack/hackcloud/mac-last b/uncloud/hack/hackcloud/mac-last
index 59f6410..8c5f254 100644
--- a/uncloud/hack/hackcloud/mac-last
+++ b/uncloud/hack/hackcloud/mac-last
@@ -1 +1 @@
-000000000251
+000000000252
diff --git a/uncloud/vmm/__init__.py b/uncloud/vmm/__init__.py
index 4c893f6..719bdbe 100644
--- a/uncloud/vmm/__init__.py
+++ b/uncloud/vmm/__init__.py
@@ -100,9 +100,9 @@ class TransferVM(Process):
 class VMM:
     # Virtual Machine Manager
     def __init__(
-        self,
-        qemu_path="/usr/bin/qemu-system-x86_64",
-        vmm_backend=os.path.expanduser("~/uncloud/vmm/"),
+            self,
+            qemu_path="/usr/bin/qemu-system-x86_64",
+            vmm_backend=os.path.expanduser("~/uncloud/vmm/"),
     ):
         self.qemu_path = qemu_path
         self.vmm_backend = vmm_backend