diff --git a/kv/mdbx/kv_mdbx.go b/kv/mdbx/kv_mdbx.go
index c67a4b217..f993265da 100644
--- a/kv/mdbx/kv_mdbx.go
+++ b/kv/mdbx/kv_mdbx.go
@@ -1127,7 +1127,7 @@ func (c *MdbxCursor) prevDup() ([]byte, []byte, error)     { return c.c.Get(nil,
 func (c *MdbxCursor) prevNoDup() ([]byte, []byte, error)   { return c.c.Get(nil, nil, mdbx.PrevNoDup) }
 func (c *MdbxCursor) last() ([]byte, []byte, error)        { return c.c.Get(nil, nil, mdbx.Last) }
 func (c *MdbxCursor) delCurrent() error                    { return c.c.Del(mdbx.Current) }
-func (c *MdbxCursor) delNoDupData() error                  { return c.c.Del(mdbx.NoDupData) }
+func (c *MdbxCursor) delAllDupData() error                 { return c.c.Del(mdbx.AllDups) }
 func (c *MdbxCursor) put(k, v []byte) error                { return c.c.Put(k, v, 0) }
 func (c *MdbxCursor) putCurrent(k, v []byte) error         { return c.c.Put(k, v, mdbx.Current) }
 func (c *MdbxCursor) putNoOverwrite(k, v []byte) error     { return c.c.Put(k, v, mdbx.NoOverwrite) }
@@ -1330,17 +1330,6 @@ func (c *MdbxCursor) Delete(k []byte) error {
 		return c.deleteDupSort(k)
 	}
 
-	if c.bucketCfg.Flags&mdbx.DupSort != 0 {
-		_, err := c.getBoth(k, nil)
-		if err != nil {
-			if mdbx.IsNotFound(err) {
-				return nil
-			}
-			return err
-		}
-		return c.delCurrent()
-	}
-
 	_, _, err := c.set(k)
 	if err != nil {
 		if mdbx.IsNotFound(err) {
@@ -1349,6 +1338,9 @@ func (c *MdbxCursor) Delete(k []byte) error {
 		return err
 	}
 
+	if c.bucketCfg.Flags&mdbx.DupSort != 0 {
+		return c.delAllDupData()
+	}
 	return c.delCurrent()
 }
 
@@ -1664,7 +1656,7 @@ func (c *MdbxDupSortCursor) PutNoDupData(key, value []byte) error {
 
 // DeleteCurrentDuplicates - delete all of the data items for the current key.
 func (c *MdbxDupSortCursor) DeleteCurrentDuplicates() error {
-	if err := c.delNoDupData(); err != nil {
+	if err := c.delAllDupData(); err != nil {
 		return fmt.Errorf("in DeleteCurrentDuplicates: %w", err)
 	}
 	return nil
diff --git a/kv/mdbx/kv_mdbx_test.go b/kv/mdbx/kv_mdbx_test.go
index 2eb0ded85..47d36c446 100644
--- a/kv/mdbx/kv_mdbx_test.go
+++ b/kv/mdbx/kv_mdbx_test.go
@@ -22,6 +22,7 @@ import (
 
 	"github.com/ledgerwatch/erigon-lib/kv"
 	"github.com/ledgerwatch/log/v3"
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
@@ -529,3 +530,24 @@ func TestCurrentDup(t *testing.T) {
 	require.Equal(t, []string{"key1", "key1"}, keys)
 	require.Equal(t, []string{"value1.1", "value1.3"}, values)
 }
+
+func TestDupDelete(t *testing.T) {
+	db, tx, c := BaseCase(t)
+	defer db.Close()
+	defer tx.Rollback()
+	defer c.Close()
+
+	k, _, err := c.Current()
+	require.Nil(t, err)
+	require.Equal(t, []byte("key3"), k)
+
+	err = c.DeleteCurrentDuplicates()
+	require.Nil(t, err)
+
+	err = c.Delete([]byte("key1"))
+	require.Nil(t, err)
+
+	count, err := c.Count()
+	require.Nil(t, err)
+	assert.Zero(t, count)
+}
diff --git a/kv/memdb/memory_mutation.go b/kv/memdb/memory_mutation.go
index 8d9c701e6..535c1e121 100644
--- a/kv/memdb/memory_mutation.go
+++ b/kv/memdb/memory_mutation.go
@@ -379,5 +379,5 @@ func (m *MemoryMutation) ViewID() uint64 {
 }
 
 func (m *MemoryMutation) Reset() error {
-	return nil
+	panic("MemoryMutation.Reset not implemented")
 }