diff --git a/cmd/lotus-bench/simple.go b/cmd/lotus-bench/simple.go
index a742b0fb3..6e1dea0db 100644
--- a/cmd/lotus-bench/simple.go
+++ b/cmd/lotus-bench/simple.go
@@ -120,6 +120,11 @@ p: pvC0JBrEyUqtIIUvB2UUx/2a24c3Cvnu6AZ0D3IMBYAu...
 
 type benchSectorProvider map[storiface.SectorFileType]string
 
+func (b benchSectorProvider) AcquireSectorCopy(ctx context.Context, id storiface.SectorRef, existing storiface.SectorFileType, allocate storiface.SectorFileType, ptype storiface.PathType) (storiface.SectorPaths, func(), error) {
+	// there's no copying in this context
+	return b.AcquireSector(ctx, id, existing, allocate, ptype)
+}
+
 func (b benchSectorProvider) AcquireSector(ctx context.Context, id storiface.SectorRef, existing storiface.SectorFileType, allocate storiface.SectorFileType, ptype storiface.PathType) (storiface.SectorPaths, func(), error) {
 	out := storiface.SectorPaths{
 		ID:          id.ID,
diff --git a/storage/sealer/ffiwrapper/sealer_test.go b/storage/sealer/ffiwrapper/sealer_test.go
index 1dc7330cc..9e8632d80 100644
--- a/storage/sealer/ffiwrapper/sealer_test.go
+++ b/storage/sealer/ffiwrapper/sealer_test.go
@@ -1134,7 +1134,7 @@ func TestGenerateSDR(t *testing.T) {
 	_, err = sb.SealPreCommit1(context.TODO(), si, s.ticket, []abi.PieceInfo{s.pi})
 	require.NoError(t, err)
 
-	// sdr for comparasion
+	// sdr for comparison
 
 	sdrCache := filepath.Join(d, "sdrcache")