diff --git a/.golangci.yml b/.golangci.yml
index 5c7e9d91..1404dd10 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -79,5 +79,6 @@ linters:
     - contextcheck
     - importas
     - truecloudlab-linters
+    - perfsprint
   disable-all: true
   fast: false
diff --git a/pkg/metrics/writecache.go b/pkg/metrics/writecache.go
index c8f815ca..ea3d8742 100644
--- a/pkg/metrics/writecache.go
+++ b/pkg/metrics/writecache.go
@@ -1,7 +1,7 @@
 package metrics
 
 import (
-	"fmt"
+	"strconv"
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/metrics"
@@ -52,7 +52,7 @@ func (m *writeCacheMetrics) AddMethodDuration(shardID string, method string, suc
 	m.methodDuration.With(
 		prometheus.Labels{
 			shardIDLabel: shardID,
-			successLabel: fmt.Sprintf("%v", success),
+			successLabel: strconv.FormatBool(success),
 			storageLabel: storageType,
 			methodLabel:  method,
 		},