diff --git a/validator/client/validator_aggregate.go b/validator/client/validator_aggregate.go
index df040604c..a7d91ae58 100644
--- a/validator/client/validator_aggregate.go
+++ b/validator/client/validator_aggregate.go
@@ -48,7 +48,7 @@ func (v *validator) SubmitAggregateAndProof(ctx context.Context, slot uint64, pu
 	defer span.End()
 
 	span.AddAttributes(trace.StringAttribute("validator", fmt.Sprintf("%#x", pubKey)))
-	fmtKey := fmt.Sprintf("%#x", pubKey[:8])
+	fmtKey := fmt.Sprintf("%#x", pubKey[:])
 
 	duty, err := v.duty(pubKey)
 	if err != nil {
diff --git a/validator/client/validator_attest.go b/validator/client/validator_attest.go
index 46ded815c..0ab1fb23d 100644
--- a/validator/client/validator_attest.go
+++ b/validator/client/validator_attest.go
@@ -54,7 +54,7 @@ func (v *validator) SubmitAttestation(ctx context.Context, slot uint64, pubKey [
 	defer span.End()
 	span.AddAttributes(trace.StringAttribute("validator", fmt.Sprintf("%#x", pubKey)))
 
-	fmtKey := fmt.Sprintf("%#x", pubKey[:8])
+	fmtKey := fmt.Sprintf("%#x", pubKey[:])
 	log := log.WithField("pubKey", fmt.Sprintf("%#x", bytesutil.Trunc(pubKey[:]))).WithField("slot", slot)
 	duty, err := v.duty(pubKey)
 	if err != nil {
diff --git a/validator/client/validator_metrics.go b/validator/client/validator_metrics.go
index 00a9f4bd3..ccc917646 100644
--- a/validator/client/validator_metrics.go
+++ b/validator/client/validator_metrics.go
@@ -65,10 +65,11 @@ func (v *validator) LogValidatorGainsAndLosses(ctx context.Context, slot uint64)
 	for _, pkey := range pubKeys {
 		pubKey := fmt.Sprintf("%#x", pkey[:8])
 		log := log.WithField("pubKey", pubKey)
+		fmtKey := fmt.Sprintf("%#x", pkey[:])
 		if missingValidators[bytesutil.ToBytes48(pkey)] {
 			log.Info("Validator not in beacon chain")
 			if v.emitAccountMetrics {
-				validatorBalancesGaugeVec.WithLabelValues(pubKey).Set(0)
+				validatorBalancesGaugeVec.WithLabelValues(fmtKey).Set(0)
 			}
 			continue
 		}
@@ -92,7 +93,7 @@ func (v *validator) LogValidatorGainsAndLosses(ctx context.Context, slot uint64)
 				"percentChange":        fmt.Sprintf("%.5f%%", percentNet*100),
 			}).Info("Previous epoch voting summary")
 			if v.emitAccountMetrics {
-				validatorBalancesGaugeVec.WithLabelValues(pubKey).Set(newBalance)
+				validatorBalancesGaugeVec.WithLabelValues(fmtKey).Set(newBalance)
 			}
 		}
 
diff --git a/validator/client/validator_propose.go b/validator/client/validator_propose.go
index 083026ad3..c0efe555a 100644
--- a/validator/client/validator_propose.go
+++ b/validator/client/validator_propose.go
@@ -56,7 +56,7 @@ func (v *validator) ProposeBlock(ctx context.Context, slot uint64, pubKey [48]by
 	}
 	ctx, span := trace.StartSpan(ctx, "validator.ProposeBlock")
 	defer span.End()
-	fmtKey := fmt.Sprintf("%#x", pubKey[:8])
+	fmtKey := fmt.Sprintf("%#x", pubKey[:])
 
 	span.AddAttributes(trace.StringAttribute("validator", fmt.Sprintf("%#x", pubKey)))
 	log := log.WithField("pubKey", fmt.Sprintf("%#x", bytesutil.Trunc(pubKey[:])))