diff --git a/testutil/nullify/nullify.go b/testutil/nullify/nullify.go
deleted file mode 100644
index e646027769..0000000000
--- a/testutil/nullify/nullify.go
+++ /dev/null
@@ -1,57 +0,0 @@
-// Package nullify provides methods to init nil value structs for test assertion.
-package nullify
-
-import (
-	"reflect"
-	"unsafe"
-
-	sdk "github.com/cosmos/cosmos-sdk/types"
-)
-
-var (
-	coinType  = reflect.TypeOf(sdk.Coin{})
-	coinsType = reflect.TypeOf(sdk.Coins{})
-)
-
-// Fill analyzes all struct fields and slices with
-// reflection and initializes the nil and empty slices,
-// structs, and pointers.
-func Fill(x interface{}) interface{} {
-	v := reflect.Indirect(reflect.ValueOf(x))
-	switch v.Kind() {
-	case reflect.Slice:
-		for i := 0; i < v.Len(); i++ {
-			obj := v.Index(i)
-			objPt := reflect.NewAt(obj.Type(), unsafe.Pointer(obj.UnsafeAddr())).Interface()
-			objPt = Fill(objPt)
-			obj.Set(reflect.ValueOf(objPt))
-		}
-	case reflect.Struct:
-		for i := 0; i < v.NumField(); i++ {
-			f := reflect.Indirect(v.Field(i))
-			if !f.CanSet() {
-				continue
-			}
-			switch f.Kind() {
-			case reflect.Slice:
-				f.Set(reflect.MakeSlice(f.Type(), 0, 0))
-			case reflect.Struct:
-				switch f.Type() {
-				case coinType:
-					coin := reflect.New(coinType).Interface()
-					s := reflect.ValueOf(coin).Elem()
-					f.Set(s)
-				case coinsType:
-					coins := reflect.New(coinsType).Interface()
-					s := reflect.ValueOf(coins).Elem()
-					f.Set(s)
-				default:
-					objPt := reflect.NewAt(f.Type(), unsafe.Pointer(f.UnsafeAddr())).Interface()
-					s := Fill(objPt)
-					f.Set(reflect.ValueOf(s))
-				}
-			}
-		}
-	}
-	return reflect.Indirect(v).Interface()
-}
diff --git a/x/payment/genesis_test.go b/x/payment/genesis_test.go
index 5e90a38c61..e494439ff9 100644
--- a/x/payment/genesis_test.go
+++ b/x/payment/genesis_test.go
@@ -4,7 +4,6 @@ import (
 	"testing"
 
 	keepertest "github.com/celestiaorg/celestia-app/testutil/keeper"
-	"github.com/celestiaorg/celestia-app/testutil/nullify"
 	"github.com/celestiaorg/celestia-app/x/payment"
 	"github.com/celestiaorg/celestia-app/x/payment/types"
 	"github.com/stretchr/testify/require"
@@ -19,7 +18,4 @@ func TestGenesis(t *testing.T) {
 	payment.InitGenesis(ctx, *k, genesisState)
 	got := payment.ExportGenesis(ctx, *k)
 	require.NotNil(t, got)
-
-	nullify.Fill(&genesisState)
-	nullify.Fill(got)
 }