diff --git a/model/metric.go b/model/metric.go
index e73e2597d2..fdb2802b37 100644
--- a/model/metric.go
+++ b/model/metric.go
@@ -14,7 +14,6 @@
 package model
 
 import (
-	"fmt"
 	"time"
 )
 
@@ -46,10 +45,6 @@ type Metric map[LabelName]LabelValue
 // remedied down the road.
 type SampleValue float32
 
-func (s SampleValue) String() string {
-	return fmt.Sprintf("%f", s)
-}
-
 type Sample struct {
 	Metric    Metric
 	Value     SampleValue