diff --git a/src/aleph/vm/controllers/interface.py b/src/aleph/vm/controllers/interface.py
index fceda2c04..32caf84a0 100644
--- a/src/aleph/vm/controllers/interface.py
+++ b/src/aleph/vm/controllers/interface.py
@@ -15,20 +15,20 @@
 
 class AlephVmControllerInterface(ABC):
     vm_id: int
-    "id in the VMPool, attributed at execution"
+    """id in the VMPool, attributed at execution"""
     vm_hash: ItemHash
-    "identifier for the VM definition, linked to an Aleph Message"
+    """identifier for the VM definition, linked to an Aleph Message"""
     resources: Any
-    "local resource for the machine"
+    """local resource for the machine"""
     enable_console: bool
     enable_networking: bool
-    "enable networking for this VM"
+    """enable networking for this VM"""
     hardware_resources: MachineResources
     support_snapshot: bool
-    "Does this controller support snapshotting"
+    """Does this controller support snapshotting"""
     guest_api_process: Optional[Process] = None
     tap_interface: Optional[TapInterface] = None
-    "Network interface used for this VM"
+    """Network interface used for this VM"""
 
     def get_ip(self) -> Optional[str]:
         if self.tap_interface:
@@ -81,7 +81,7 @@ async def teardown(self) -> Coroutine:
         raise NotImplementedError()
 
     async def create_snapshot(self) -> CompressedDiskVolumeSnapshot:
-        "Must be implement if self.support_snapshot is True"
+        """Must be implement if self.support_snapshot is True"""
         raise NotImplementedError()
 
     async def get_log_queue(self) -> asyncio.Queue:
diff --git a/src/aleph/vm/controllers/qemu/instance.py b/src/aleph/vm/controllers/qemu/instance.py
index aca9d79df..23e56c816 100644
--- a/src/aleph/vm/controllers/qemu/instance.py
+++ b/src/aleph/vm/controllers/qemu/instance.py
@@ -34,7 +34,7 @@ async def download_all(self):
         return
 
     async def make_writable_volume(self, parent_image_path, volume: PersistentVolume | RootfsVolume):
-        "Create a new qcow2 image file based on the passed one, that we give to the VM to write onto"
+        """Create a new qcow2 image file based on the passed one, that we give to the VM to write onto"""
         qemu_img_path = shutil.which("qemu-img")
         volume_name = volume.name if isinstance(volume, PersistentVolume) else "rootfs"
 
@@ -261,7 +261,7 @@ async def wait_for_init(self) -> None:
                     raise
 
     async def configure(self):
-        "Nothing to configure, we do the configuration via cloud init"
+        """Nothing to configure, we do the configuration via cloud init"""
         pass
 
     async def start_guest_api(self):