diff --git a/internal/home/upgrade_test.go b/internal/home/upgrade_test.go
index 7189f51c848..4210305a8df 100644
--- a/internal/home/upgrade_test.go
+++ b/internal/home/upgrade_test.go
@@ -20,7 +20,7 @@ func TestUpgradeSchema1to2(t *testing.T) {
 	err := upgradeSchema1to2(&diskConf)
 	require.Nil(t, err)
 
-	compareSchemaVersion(t, diskConf["schema_version"], 2)
+	require.Equal(t, diskConf["schema_version"], 2)
 
 	_, ok := diskConf["coredns"]
 	require.False(t, ok)
@@ -44,7 +44,7 @@ func TestUpgradeSchema2to3(t *testing.T) {
 	err := upgradeSchema2to3(&diskConf)
 	require.Nil(t, err)
 
-	compareSchemaVersion(t, diskConf["schema_version"], 3)
+	require.Equal(t, diskConf["schema_version"], 3)
 
 	dnsMap, ok := diskConf["dns"]
 	require.True(t, ok)
@@ -68,17 +68,17 @@ func TestUpgradeSchema2to3(t *testing.T) {
 	assertEqualExcept(t, oldDiskConf, diskConf, excludedEntries, excludedEntries)
 }
 
-func convertToObject(t *testing.T, oldConf interface{}) (newConf map[string]interface{}) {
+func convertToObject(t *testing.T, oldConf any) (newConf object) {
 	t.Helper()
 
 	switch v := oldConf.(type) {
-	case map[interface{}]interface{}:
-		newConf = make(map[string]interface{}, len(v))
+	case map[any]any:
+		newConf = make(object, len(v))
 		for key, value := range v {
 			newConf[fmt.Sprint(key)] = value
 		}
-	case map[string]interface{}:
-		newConf = make(map[string]interface{}, len(v))
+	case object:
+		newConf = make(object, len(v))
 		for key, value := range v {
 			newConf[key] = value
 		}
@@ -103,20 +103,6 @@ func assertEqualExcept(t *testing.T, oldConf, newConf object, oldKeys, newKeys [
 	assert.Equal(t, oldConf, newConf)
 }
 
-// compareSchemaVersion checks if newSchemaVersion equals schemaVersion.
-func compareSchemaVersion(t *testing.T, newSchemaVersion any, schemaVersion int) {
-	t.Helper()
-
-	switch v := newSchemaVersion.(type) {
-	case int:
-		if v != schemaVersion {
-			t.Fatalf("Wrong schema version in new config file")
-		}
-	default:
-		t.Fatalf("schema version is not an integer after update, got %T", newSchemaVersion)
-	}
-}
-
 func testDiskConf(schemaVersion int) (diskConf object) {
 	filters := []filter{
 		{
@@ -151,6 +137,8 @@ func testDiskConf(schemaVersion int) (diskConf object) {
 	return diskConf
 }
 
+// testDNSConf creates a DNS config for test the way gopkg.in/yaml.v2 would
+// unmarshal it.  In YAML, keys aren't guaranteed to always only be strings.
 func testDNSConf(schemaVersion int) (dnsConf map[any]any) {
 	dnsConf = map[any]any{
 		"port":                 53,