diff --git a/unmaintained/fix_dat/fix_dat.go b/unmaintained/fix_dat/fix_dat.go
index 51417a9d2..d6110d870 100644
--- a/unmaintained/fix_dat/fix_dat.go
+++ b/unmaintained/fix_dat/fix_dat.go
@@ -67,7 +67,7 @@ func main() {
 
 	iterateEntries(datBackend, indexFile, func(n *needle.Needle, offset int64) {
 		fmt.Printf("needle id=%v name=%s size=%d dataSize=%d\n", n.Id, string(n.Name), n.Size, n.DataSize)
-		_, s, _, e := n.Append(datBackend, superBlock.Version())
+		_, s, _, e := n.Append(datBackend, superBlock.Version)
 		fmt.Printf("size %d error %v\n", s, e)
 	})
 
@@ -87,7 +87,7 @@ func iterateEntries(datBackend backend.BackendStorageFile, idxFile *os.File, vis
 		return
 	}
 	offset := int64(superBlock.BlockSize())
-	version := superBlock.Version()
+	version := superBlock.Version
 	n, _, rest, err := needle.ReadNeedleHeader(datBackend, version, offset)
 	if err != nil {
 		fmt.Printf("cannot read needle header: %v", err)
diff --git a/unmaintained/remove_duplicate_fids/remove_duplicate_fids.go b/unmaintained/remove_duplicate_fids/remove_duplicate_fids.go
index 9456e5ff0..84173a663 100644
--- a/unmaintained/remove_duplicate_fids/remove_duplicate_fids.go
+++ b/unmaintained/remove_duplicate_fids/remove_duplicate_fids.go
@@ -34,7 +34,7 @@ type VolumeFileScanner4SeeDat struct {
 }
 
 func (scanner *VolumeFileScanner4SeeDat) VisitSuperBlock(superBlock super_block.SuperBlock) error {
-	scanner.version = superBlock.Version()
+	scanner.version = superBlock.Version
 	scanner.block = superBlock
 	return nil
 
diff --git a/unmaintained/see_dat/see_dat.go b/unmaintained/see_dat/see_dat.go
index e1920211e..efc58e751 100644
--- a/unmaintained/see_dat/see_dat.go
+++ b/unmaintained/see_dat/see_dat.go
@@ -21,7 +21,7 @@ type VolumeFileScanner4SeeDat struct {
 }
 
 func (scanner *VolumeFileScanner4SeeDat) VisitSuperBlock(superBlock super_block.SuperBlock) error {
-	scanner.version = superBlock.Version()
+	scanner.version = superBlock.Version
 	return nil
 
 }