diff --git a/types/Uint.go b/types/Uint.go
index 4ba409e..2068e30 100644
--- a/types/Uint.go
+++ b/types/Uint.go
@@ -202,7 +202,9 @@ type U256 struct {
 }
 
 func (u *U256) Process() {
-	u.Value = utiles.AddHex(utiles.BytesToHex(u.NextBytes(32)))
+	reverseData := u.NextBytes(32)
+	Reverse(reverseData)
+	u.Value = decimal.NewFromBigInt(utiles.U256(utiles.BytesToHex(reverseData)), 0)
 }
 
 func (u *U256) Encode(value interface{}) string {
diff --git a/types/types_test.go b/types/types_test.go
index 4dee48d..e56569a 100644
--- a/types/types_test.go
+++ b/types/types_test.go
@@ -368,6 +368,8 @@ func TestU256(t *testing.T) {
 	raw := "0x1001000000000000000000000000000000000000000000000000000000000000"
 	m := ScaleDecoder{}
 	m.Init(scaleBytes.ScaleBytes{Data: utiles.HexToBytes(raw)}, nil)
-	assert.Equal(t, raw, utiles.AddHex(Encode("U256", utiles.U256DecoderToBigInt(m.ProcessAndUpdateData("U256").(string)))))
+	assert.Equal(t, raw, utiles.AddHex(Encode("U256", m.ProcessAndUpdateData("U256").(decimal.Decimal))))
 	assert.Equal(t, raw, utiles.AddHex(Encode("U256", "0x1001000000000000000000000000000000000000000000000000000000000000")))
+	m.Init(scaleBytes.ScaleBytes{Data: utiles.HexToBytes("0x00b5070000000000000000000000000000000000000000000000000000000000")}, nil)
+	assert.Equal(t, int64(505088), m.ProcessAndUpdateData("U256").(decimal.Decimal).IntPart())
 }