diff --git a/go.mod b/go.mod
index d0de820..db81def 100644
--- a/go.mod
+++ b/go.mod
@@ -4,5 +4,5 @@ go 1.16
 
 require (
 	github.com/VictoriaMetrics/metrics v1.18.0
-	go.unistack.org/micro/v3 v3.8.7
+	go.unistack.org/micro/v3 v3.8.6
 )
diff --git a/go.sum b/go.sum
index f5d6302..6a2745a 100644
--- a/go.sum
+++ b/go.sum
@@ -15,8 +15,8 @@ github.com/valyala/histogram v1.2.0 h1:wyYGAZZt3CpwUiIb9AU/Zbllg1llXyrtApRS815OL
 github.com/valyala/histogram v1.2.0/go.mod h1:Hb4kBwb4UxsaNbbbh+RRz8ZR6pdodR57tzWUS3BUzXY=
 go.unistack.org/micro-proto/v3 v3.1.0 h1:q39FwjFiRZn+Ux/tt+d3bJTmDtsQQWa+3SLYVo1vLfA=
 go.unistack.org/micro-proto/v3 v3.1.0/go.mod h1:DpRhYCBXlmSJ/AAXTmntvlh7kQkYU6eFvlmYAx4BQS8=
-go.unistack.org/micro/v3 v3.8.7 h1:k1zOpJ3uS8MxdhK8annRsa5J/LW7MpqPjwYuekW61wE=
-go.unistack.org/micro/v3 v3.8.7/go.mod h1:KMMmOmbgo/D52/rCAbqeKbBsgEEbSKM69he54J3ZIuA=
+go.unistack.org/micro/v3 v3.8.6 h1:nU6dpNRF7iF8dtcTTfzdPan8RkhiDuTsfMrXBmpzG/g=
+go.unistack.org/micro/v3 v3.8.6/go.mod h1:KMMmOmbgo/D52/rCAbqeKbBsgEEbSKM69he54J3ZIuA=
 golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
diff --git a/victoriametrics.go b/victoriametrics.go
index 2884056..6f6294b 100644
--- a/victoriametrics.go
+++ b/victoriametrics.go
@@ -47,10 +47,10 @@ func (r *victoriametricsMeter) buildName(name string, labels ...string) string {
 		return meter.BuildName(name, nlabels...)
 	}
 
-	for idx := 0; idx <= len(nlabels)/2; idx += 2 {
+	for idx := 0; idx < nl; idx++ {
 		nlabels[idx] = r.opts.LabelPrefix + nlabels[idx]
+		idx++
 	}
-
 	return meter.BuildName(name, nlabels...)
 }
 
diff --git a/victoriametrics_test.go b/victoriametrics_test.go
index b5c5b82..7851516 100644
--- a/victoriametrics_test.go
+++ b/victoriametrics_test.go
@@ -14,8 +14,8 @@ import (
 func TestBuildName(t *testing.T) {
 	m := NewMeter()
 	im := m.(*victoriametricsMeter)
-	check := `micro_foo{micro_aaa="b",micro_bar="baz"}`
-	name := im.buildName("foo", "bar", "baz", "aaa", "b")
+	check := `micro_foo{micro_aaa="b",micro_bar="baz",micro_ccc="d"}`
+	name := im.buildName("foo", "bar", "baz", "aaa", "b", "ccc", "d")
 	if name != check {
 		t.Fatalf("metric name error: %s != %s", name, check)
 	}