diff --git a/internal/logs/logs.go b/internal/logs/logs.go
index 4f0b29124..ae8834517 100644
--- a/internal/logs/logs.go
+++ b/internal/logs/logs.go
@@ -480,12 +480,6 @@ const (
 	BlobstoreRebuildStarted                                              = "blobstore rebuild started"
 	BlobstoreRebuildCompletedSuccessfully                                = "blobstore rebuild completed successfully"
 	BlobstoreRebuildStopped                                              = "blobstore rebuild stopped"
-	BlobovniczaTreeFixingFileExtensions                                  = "fixing blobovnicza tree file extensions..."
-	BlobovniczaTreeFixingFileExtensionsCompletedSuccessfully             = "fixing blobovnicza tree file extensions completed successfully"
-	BlobovniczaTreeFixingFileExtensionsFailed                            = "failed to fix blobovnicza tree file extensions"
-	BlobovniczaTreeFixingFileExtensionForFile                            = "fixing blobovnicza file extension..."
-	BlobovniczaTreeFixingFileExtensionCompletedSuccessfully              = "fixing blobovnicza file extension completed successfully"
-	BlobovniczaTreeFixingFileExtensionFailed                             = "failed to fix blobovnicza file extension"
 	BlobstorRebuildFailedToRebuildStorages                               = "failed to rebuild storages"
 	BlobstorRebuildRebuildStoragesCompleted                              = "storages rebuild completed"
 	BlobovniczaTreeCollectingDBToRebuild                                 = "collecting blobovniczas to rebuild..."
diff --git a/pkg/local_object_storage/blobstor/blobovniczatree/control.go b/pkg/local_object_storage/blobstor/blobovniczatree/control.go
index eeade9425..a31e9d6cb 100644
--- a/pkg/local_object_storage/blobstor/blobovniczatree/control.go
+++ b/pkg/local_object_storage/blobstor/blobovniczatree/control.go
@@ -2,10 +2,6 @@ package blobovniczatree
 
 import (
 	"context"
-	"errors"
-	"os"
-	"path/filepath"
-	"strings"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
@@ -14,8 +10,6 @@ import (
 	"golang.org/x/sync/errgroup"
 )
 
-var errFailedToChangeExtensionReadOnly = errors.New("failed to change blobovnicza extension: read only mode")
-
 // Open opens blobovnicza tree.
 func (b *Blobovniczas) Open(mode mode.ComponentMode) error {
 	b.readOnly = mode.ReadOnly()
@@ -31,13 +25,6 @@ func (b *Blobovniczas) Open(mode mode.ComponentMode) error {
 func (b *Blobovniczas) Init() error {
 	b.log.Debug(logs.BlobovniczatreeInitializingBlobovniczas)
 
-	b.log.Debug(logs.BlobovniczaTreeFixingFileExtensions)
-	if err := b.addDBExtensionToDBs(b.rootPath, 0); err != nil {
-		b.log.Error(logs.BlobovniczaTreeFixingFileExtensionsFailed, zap.Error(err))
-		return err
-	}
-	b.log.Debug(logs.BlobovniczaTreeFixingFileExtensionsCompletedSuccessfully)
-
 	if b.readOnly {
 		b.log.Debug(logs.BlobovniczatreeReadonlyModeSkipBlobovniczasInitialization)
 		return nil
@@ -111,37 +98,3 @@ func (b *Blobovniczas) getBlobovnicza(p string) *sharedDB {
 func (b *Blobovniczas) getBlobovniczaWithoutCaching(p string) *sharedDB {
 	return b.commondbManager.GetByPath(p)
 }
-
-func (b *Blobovniczas) addDBExtensionToDBs(path string, depth uint64) error {
-	entries, err := os.ReadDir(path)
-	if os.IsNotExist(err) && depth == 0 {
-		return nil
-	}
-
-	for _, entry := range entries {
-		if entry.IsDir() {
-			if err := b.addDBExtensionToDBs(filepath.Join(path, entry.Name()), depth+1); err != nil {
-				return err
-			}
-			continue
-		}
-
-		if strings.HasSuffix(entry.Name(), dbExtension) {
-			continue
-		}
-		if b.readOnly {
-			return errFailedToChangeExtensionReadOnly
-		}
-
-		sourcePath := filepath.Join(path, entry.Name())
-		targetPath := filepath.Join(path, entry.Name()+dbExtension)
-		b.log.Debug(logs.BlobovniczaTreeFixingFileExtensionForFile, zap.String("source", sourcePath), zap.String("target", targetPath))
-		if err := os.Rename(sourcePath, targetPath); err != nil {
-			b.log.Error(logs.BlobovniczaTreeFixingFileExtensionFailed, zap.String("source", sourcePath), zap.String("target", targetPath), zap.Error(err))
-			return err
-		}
-		b.log.Debug(logs.BlobovniczaTreeFixingFileExtensionCompletedSuccessfully, zap.String("source", sourcePath), zap.String("target", targetPath))
-	}
-
-	return nil
-}
diff --git a/pkg/local_object_storage/blobstor/blobovniczatree/control_test.go b/pkg/local_object_storage/blobstor/blobovniczatree/control_test.go
index 7218cd6bb..f0a32ded1 100644
--- a/pkg/local_object_storage/blobstor/blobovniczatree/control_test.go
+++ b/pkg/local_object_storage/blobstor/blobovniczatree/control_test.go
@@ -2,78 +2,15 @@ package blobovniczatree
 
 import (
 	"context"
-	"os"
-	"path/filepath"
-	"strings"
 	"testing"
 
 	objectCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobovnicza"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/internal/blobstortest"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"github.com/stretchr/testify/require"
 )
 
-func TestDBExtensionFix(t *testing.T) {
-	root := t.TempDir()
-	createTestTree(t, 0, 2, 3, root)
-	t.Run("adds suffix if not exists", func(t *testing.T) {
-		openAndCloseTestTree(t, 2, 3, root)
-		validateTestTree(t, root)
-	})
-
-	t.Run("not adds second suffix if exists", func(t *testing.T) {
-		openAndCloseTestTree(t, 2, 3, root)
-		validateTestTree(t, root)
-	})
-}
-
-func createTestTree(t *testing.T, currentDepth, depth, width uint64, path string) {
-	if currentDepth == depth {
-		var w uint64
-		for ; w < width; w++ {
-			dbPath := filepath.Join(path, u64ToHexString(w))
-			b := blobovnicza.New(blobovnicza.WithPath(dbPath))
-			require.NoError(t, b.Open())
-			require.NoError(t, b.Init())
-			require.NoError(t, b.Close())
-		}
-		return
-	}
-
-	var w uint64
-	for ; w < width; w++ {
-		createTestTree(t, currentDepth+1, depth, width, filepath.Join(path, u64ToHexString(w)))
-	}
-}
-
-func openAndCloseTestTree(t *testing.T, depth, width uint64, path string) {
-	blz := NewBlobovniczaTree(
-		context.Background(),
-		WithBlobovniczaShallowDepth(depth),
-		WithBlobovniczaShallowWidth(width),
-		WithRootPath(path),
-	)
-	require.NoError(t, blz.Open(mode.ComponentReadWrite))
-	require.NoError(t, blz.Init())
-	require.NoError(t, blz.Close())
-}
-
-func validateTestTree(t *testing.T, path string) {
-	entries, err := os.ReadDir(path)
-	require.NoError(t, err)
-
-	for _, entry := range entries {
-		if entry.IsDir() {
-			validateTestTree(t, filepath.Join(path, entry.Name()))
-		} else {
-			require.True(t, strings.HasSuffix(entry.Name(), dbExtension))
-			require.False(t, strings.HasSuffix(strings.TrimSuffix(entry.Name(), dbExtension), dbExtension))
-		}
-	}
-}
-
 func TestObjectsAvailableAfterDepthAndWidthEdit(t *testing.T) {
 	t.Parallel()