diff --git a/frostfsid/frostfsid_contract.go b/frostfsid/frostfsid_contract.go
index f53bfb2..98f6fdc 100644
--- a/frostfsid/frostfsid_contract.go
+++ b/frostfsid/frostfsid_contract.go
@@ -930,6 +930,7 @@ func subjectAdditionalPrefix(additionalKey interop.PublicKey) []byte {
 func namespaceKey(ns string) []byte {
 	return namespaceKeyFromHash(ripemd160Hash(ns))
 }
+
 func namespaceKeyFromHash(ns []byte) []byte {
 	return append([]byte{namespaceKeysPrefix}, ns...)
 }
diff --git a/tests/frostfsid_test.go b/tests/frostfsid_test.go
index 92bbb4a..7a7e23d 100644
--- a/tests/frostfsid_test.go
+++ b/tests/frostfsid_test.go
@@ -254,7 +254,6 @@ func TestFrostFSID_SubjectManagement(t *testing.T) {
 		require.NoError(t, err)
 		require.Len(t, addresses, 2)
 		require.ElementsMatch(t, addresses, []util.Uint160{subjKeyAddr, newSubjKey.PublicKey().GetScriptHash()})
-
 	})
 
 	anonInvoker.InvokeFail(t, notWitnessedError, deleteSubjectMethod, subjKeyAddr)
@@ -359,7 +358,6 @@ func TestFrostFSIS_GroupNameRelatedInvariants(t *testing.T) {
 	invoker.InvokeFail(t, "not available", createGroupMethod, ns1, groupName2)
 	invoker.Invoke(t, stackitem.Make(3), createGroupMethod, ns2, groupName2)
 
-
 	// Check that we cannot find group id by name for group that was removed
 	invoker.Invoke(t, stackitem.Null{}, deleteGroupMethod, ns1, groupID2)
 	s, err = invoker.TestInvoke(t, getGroupIDByNameMethod, ns1, groupName2)
@@ -369,7 +367,7 @@ func TestFrostFSIS_GroupNameRelatedInvariants(t *testing.T) {
 	invoker.Invoke(t, stackitem.Make(4), createGroupMethod, ns1, groupName2)
 
 	// Check that after group renaming its id cannot be found by old name
-	newGroupName:= "new"
+	newGroupName := "new"
 	invoker.Invoke(t, stackitem.Null{}, setGroupNameMethod, ns1, groupID1, newGroupName)
 	s, err = invoker.TestInvoke(t, getGroupIDByNameMethod, ns1, groupName1)
 	checkGroupIDResult(t, s, err, -1)