diff --git a/metric.go b/metric.go
index 2189dba..4fc0ca5 100644
--- a/metric.go
+++ b/metric.go
@@ -73,7 +73,6 @@ func NewMetric(name string, mtype string, tags []string) *Metric {
 type Client struct {
 	Series     []*Metric          `json:"series"` // raw data
 	hostname   string             // hostname
-	tags       []string           // global tags, if any
 	metrics    map[string]*Metric // map of name to metric for fast lookup
 	histograms map[string]*ExactHistogram
 	now        func() float64 // for testing