diff --git a/pkg/core/blockchain.go b/pkg/core/blockchain.go
index 1f3866ee2..e88cdd08b 100644
--- a/pkg/core/blockchain.go
+++ b/pkg/core/blockchain.go
@@ -659,7 +659,7 @@ func processTXWithValidatorsSubtract(account *state.Account, dao *cachedDao, toS
 			return err
 		}
 		validator.Votes -= toSubtract
-		if !validator.RegisteredAndHasVotes() {
+		if validator.UnregisteredAndHasNoVotes() {
 			if err := dao.DeleteValidatorState(validator); err != nil {
 				return err
 			}
diff --git a/pkg/core/state/validator.go b/pkg/core/state/validator.go
index bd3414a1f..3f8ba51d8 100644
--- a/pkg/core/state/validator.go
+++ b/pkg/core/state/validator.go
@@ -18,6 +18,11 @@ func (vs *Validator) RegisteredAndHasVotes() bool {
 	return vs.Registered && vs.Votes > util.Fixed8(0)
 }
 
+// UnregisteredAndHasNoVotes returns true when Validator is not registered and has no votes.
+func (vs *Validator) UnregisteredAndHasNoVotes() bool {
+	return !vs.Registered && vs.Votes == 0
+}
+
 // EncodeBinary encodes Validator to the given BinWriter.
 func (vs *Validator) EncodeBinary(bw *io.BinWriter) {
 	vs.PublicKey.EncodeBinary(bw)