diff --git a/extern/sector-storage/ffiwrapper/basicfs/fs.go b/extern/sector-storage/ffiwrapper/basicfs/fs.go
index a833f728c..3d19e49ef 100644
--- a/extern/sector-storage/ffiwrapper/basicfs/fs.go
+++ b/extern/sector-storage/ffiwrapper/basicfs/fs.go
@@ -34,6 +34,12 @@ func (b *Provider) AcquireSector(ctx context.Context, id storage.SectorRef, exis
 	if err := os.Mkdir(filepath.Join(b.Root, storiface.FTCache.String()), 0755); err != nil && !os.IsExist(err) { // nolint
 		return storiface.SectorPaths{}, nil, err
 	}
+	if err := os.Mkdir(filepath.Join(b.Root, storiface.FTUpdate.String()), 0755); err != nil && !os.IsExist(err) { // nolint
+		return storiface.SectorPaths{}, nil, err
+	}
+	if err := os.Mkdir(filepath.Join(b.Root, storiface.FTUpdateCache.String()), 0755); err != nil && !os.IsExist(err) { // nolint
+		return storiface.SectorPaths{}, nil, err
+	}
 
 	done := func() {}
 
diff --git a/extern/sector-storage/ffiwrapper/sealer_cgo.go b/extern/sector-storage/ffiwrapper/sealer_cgo.go
index e3939d3d1..88ab50f05 100644
--- a/extern/sector-storage/ffiwrapper/sealer_cgo.go
+++ b/extern/sector-storage/ffiwrapper/sealer_cgo.go
@@ -697,10 +697,10 @@ func (sb *Sealer) ReplicaUpdate(ctx context.Context, sector storage.SectorRef, p
 
 	if err := os.Mkdir(paths.UpdateCache, 0755); err != nil { // nolint
 		if os.IsExist(err) {
-			log.Warnf("existing cache in %s; removing", paths.Cache)
+			log.Warnf("existing cache in %s; removing", paths.UpdateCache)
 
 			if err := os.RemoveAll(paths.UpdateCache); err != nil {
-				return empty, xerrors.Errorf("remove existing sector cache from %s (sector %d): %w", paths.Cache, sector, err)
+				return empty, xerrors.Errorf("remove existing sector cache from %s (sector %d): %w", paths.UpdateCache, sector, err)
 			}
 
 			if err := os.Mkdir(paths.UpdateCache, 0755); err != nil { // nolint:gosec