diff --git a/.golangci.yml b/.golangci.yml
index d0dcfd9b..89e09982 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -19,7 +19,6 @@ linters:
         - unparam
         - golint
         - goconst
-        - unconvert
         - bodyclose
         - staticcheck
         - nakedret
diff --git a/connector/keystone/keystone_test.go b/connector/keystone/keystone_test.go
index d5d65ef1..d8bb0268 100644
--- a/connector/keystone/keystone_test.go
+++ b/connector/keystone/keystone_test.go
@@ -274,7 +274,7 @@ func TestUseRefreshToken(t *testing.T) {
 	delete(t, token, groupID, groupsURL)
 
 	expectEquals(t, 1, len(identityRefresh.Groups))
-	expectEquals(t, testGroup, string(identityRefresh.Groups[0]))
+	expectEquals(t, testGroup, identityRefresh.Groups[0])
 }
 
 func TestUseRefreshTokenUserDeleted(t *testing.T) {
diff --git a/storage/etcd/etcd.go b/storage/etcd/etcd.go
index d106f443..ee588129 100644
--- a/storage/etcd/etcd.go
+++ b/storage/etcd/etcd.go
@@ -156,7 +156,7 @@ func (c *conn) UpdateRefreshToken(id string, updater func(old storage.RefreshTok
 	return c.txnUpdate(ctx, keyID(refreshTokenPrefix, id), func(currentValue []byte) ([]byte, error) {
 		var current RefreshToken
 		if len(currentValue) > 0 {
-			if err := json.Unmarshal([]byte(currentValue), &current); err != nil {
+			if err := json.Unmarshal(currentValue, &current); err != nil {
 				return nil, err
 			}
 		}