diff --git a/consensus/state.go b/consensus/state.go
index 96c1622a6..ea0212f91 100644
--- a/consensus/state.go
+++ b/consensus/state.go
@@ -2404,9 +2404,9 @@ func (cs *State) calculatePrevoteMessageDelayMetrics() {
 	})
 	var votingPowerSeen int64
 	for _, v := range pl {
-		_, val := cs.Validators.GetByAddress(v.ValidatorAddress)
-		votingPowerSeen += val.VotingPower
-		if votingPowerSeen >= cs.Validators.TotalVotingPower()*2/3+1 {
+		_, voter := cs.Voters.GetByAddress(v.ValidatorAddress)
+		votingPowerSeen += voter.VotingPower
+		if votingPowerSeen >= cs.Voters.TotalVotingPower()*2/3+1 {
 			cs.metrics.QuorumPrevoteMessageDelay.Set(v.Timestamp.Sub(cs.Proposal.Timestamp).Seconds())
 			break
 		}
diff --git a/types/validator_set.go b/types/validator_set.go
index 9074cdf89..ed16f98dc 100644
--- a/types/validator_set.go
+++ b/types/validator_set.go
@@ -331,8 +331,8 @@ func (vals *ValidatorSet) updateTotalStakingPower() {
 	vals.totalStakingPower = sum
 }
 
-// TotalStakingPower returns the sum of the voting powers of all validators.
-// It recomputes the total voting power if required.
+// TotalStakingPower returns the sum of the staking powers of all validators.
+// It recomputes the total staking power if required.
 func (vals *ValidatorSet) TotalStakingPower() int64 {
 	if vals.totalStakingPower == 0 {
 		vals.updateTotalStakingPower()