diff --git a/.golangci.yaml b/.golangci.yaml
index 0dbb9dcd651..2141ad99f57 100644
--- a/.golangci.yaml
+++ b/.golangci.yaml
@@ -45,5 +45,6 @@ linters:
     - revive # replacement for golint
     - staticcheck
     - typecheck
+    - unconvert
     - unused
     - whitespace
diff --git a/pkg/metrics/registry/registry.go b/pkg/metrics/registry/registry.go
index 002806b5950..6400eee0e6b 100644
--- a/pkg/metrics/registry/registry.go
+++ b/pkg/metrics/registry/registry.go
@@ -60,7 +60,7 @@ func newExporterSet(exporters map[string]StartExporter) *exporterSet {
 func (es *exporterSet) String() string {
 	contents := make([]string, 0)
 	for k := range es.assignedExporters {
-		contents = append(contents, string(k))
+		contents = append(contents, k)
 	}
 	return fmt.Sprintf("%s", contents)
 }