diff --git a/header/header.go b/header/header.go
index 3ec691307d..1e43d3bd13 100644
--- a/header/header.go
+++ b/header/header.go
@@ -12,7 +12,6 @@ import (
 	core "github.com/tendermint/tendermint/types"
 
 	v1 "github.com/celestiaorg/celestia-app/v2/pkg/appconsts/v1"
-	v2 "github.com/celestiaorg/celestia-app/v2/pkg/appconsts/v2"
 	"github.com/celestiaorg/celestia-app/v2/pkg/da"
 	libhead "github.com/celestiaorg/go-header"
 	"github.com/celestiaorg/rsmt2d"
@@ -115,13 +114,9 @@ func (eh *ExtendedHeader) Validate() error {
 		return fmt.Errorf("ValidateBasic error on RawHeader at height %d: %w", eh.Height(), err)
 	}
 
-	if eh.RawHeader.Version.App != v1.Version && eh.RawHeader.Version.App != v2.Version {
-		return fmt.Errorf(
-			"app version mismatch, expected: %d or %d, got %d",
-			v1.Version,
-			v2.Version,
-			eh.RawHeader.Version.App,
-		)
+	if eh.RawHeader.Version.App != v1.Version {
+		return fmt.Errorf("app version mismatch, expected: %d, got %d", v1.Version,
+			eh.RawHeader.Version.App)
 	}
 
 	err = eh.Commit.ValidateBasic()
diff --git a/header/headertest/validate_test.go b/header/headertest/validate_test.go
deleted file mode 100644
index 8d95c357de..0000000000
--- a/header/headertest/validate_test.go
+++ /dev/null
@@ -1,64 +0,0 @@
-package headertest
-
-import (
-	"fmt"
-	"strconv"
-	"testing"
-	"time"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
-	"github.com/tendermint/tendermint/types"
-
-	"github.com/celestiaorg/celestia-app/v2/pkg/da"
-
-	"github.com/celestiaorg/celestia-node/header"
-)
-
-func TestValidate(t *testing.T) {
-	testCases := []struct {
-		extendedHeader *header.ExtendedHeader
-		wantErr        error
-	}{
-		{
-			extendedHeader: getExtendedHeader(t, 1),
-			wantErr:        nil,
-		},
-		{
-			extendedHeader: getExtendedHeader(t, 2),
-			wantErr:        nil,
-		},
-		{
-			extendedHeader: getExtendedHeader(t, 3),
-			wantErr:        fmt.Errorf("app version mismatch, expected: 1 or 2, got 3"),
-		},
-	}
-
-	for i, tc := range testCases {
-		t.Run(strconv.Itoa(i), func(t *testing.T) {
-			got := tc.extendedHeader.Validate()
-			assert.Equal(t, tc.wantErr, got)
-		})
-	}
-}
-
-func getExtendedHeader(t *testing.T, appVersion uint64) *header.ExtendedHeader {
-	validatorSet, privValidators := RandValidatorSet(1, 1)
-	rawHeader := RandRawHeader(t)
-	rawHeader.Version.App = appVersion
-	rawHeader.ValidatorsHash = validatorSet.Hash()
-
-	minHeader := da.MinDataAvailabilityHeader()
-	rawHeader.DataHash = minHeader.Hash()
-
-	blockID := RandBlockID(t)
-	blockID.Hash = rawHeader.Hash()
-	voteSet := types.NewVoteSet(rawHeader.ChainID, rawHeader.Height, 0, tmproto.PrecommitType, validatorSet)
-	commit, err := MakeCommit(blockID, rawHeader.Height, 0, voteSet, privValidators, time.Now())
-	require.NoError(t, err)
-
-	result, err := header.MakeExtendedHeader(rawHeader, commit, validatorSet, nil)
-	require.NoError(t, err)
-	return result
-}