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-rw-r--r--nova/pci/stats.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/nova/pci/stats.py b/nova/pci/stats.py
index 5c5f7c669c..c6e4844b34 100644
--- a/nova/pci/stats.py
+++ b/nova/pci/stats.py
@@ -82,7 +82,7 @@ class PciDeviceStats(object):
self,
numa_topology: 'objects.NUMATopology',
stats: 'objects.PCIDevicePoolList' = None,
- dev_filter: whitelist.Whitelist = None,
+ dev_filter: ty.Optional[whitelist.Whitelist] = None,
) -> None:
self.numa_topology = numa_topology
self.pools = (