diff --git a/cmd/certs.go b/cmd/certs.go
index 4adf076..96244b7 100644
--- a/cmd/certs.go
+++ b/cmd/certs.go
@@ -98,9 +98,6 @@ func listCerts(ctx *cli.Context) error {
 
 	fmt.Printf("Domain\tValidTill\n\n")
 	for _, cert := range items {
-		if cert.Domain[0] == '.' {
-			cert.Domain = "*" + cert.Domain
-		}
 		fmt.Printf("%s\t%s\n",
 			cert.Domain,
 			time.Unix(cert.ValidTill, 0).Format(time.RFC3339))
diff --git a/cmd/flags.go b/cmd/flags.go
index 40bb053..da3febc 100644
--- a/cmd/flags.go
+++ b/cmd/flags.go
@@ -43,6 +43,18 @@ var (
 			EnvVars: []string{"GITEA_API_TOKEN"},
 			Value:   "",
 		},
+		&cli.BoolFlag{
+			Name:    "enable-lfs-support",
+			Usage:   "enable lfs support, require gitea >= v1.17.0 as backend",
+			EnvVars: []string{"ENABLE_LFS_SUPPORT"},
+			Value:   true,
+		},
+		&cli.BoolFlag{
+			Name:    "enable-symlink-support",
+			Usage:   "follow symlinks if enabled, require gitea >= v1.18.0 as backend",
+			EnvVars: []string{"ENABLE_SYMLINK_SUPPORT"},
+			Value:   true,
+		},
 
 		// ###########################
 		// ### Page Server Domains ###
@@ -73,7 +85,9 @@ var (
 			Value:   "https://docs.codeberg.org/codeberg-pages/raw-content/",
 		},
 
-		// Server
+		// #########################
+		// ### Page Server Setup ###
+		// #########################
 		&cli.StringFlag{
 			Name:    "host",
 			Usage:   "specifies host of listening address",
@@ -91,19 +105,6 @@ var (
 			// TODO: desc
 			EnvVars: []string{"ENABLE_HTTP_SERVER"},
 		},
-		// Server Options
-		&cli.BoolFlag{
-			Name:    "enable-lfs-support",
-			Usage:   "enable lfs support, require gitea v1.17.0 as backend",
-			EnvVars: []string{"ENABLE_LFS_SUPPORT"},
-			Value:   true,
-		},
-		&cli.BoolFlag{
-			Name:    "enable-symlink-support",
-			Usage:   "follow symlinks if enabled, require gitea v1.18.0 as backend",
-			EnvVars: []string{"ENABLE_SYMLINK_SUPPORT"},
-			Value:   true,
-		},
 		&cli.StringFlag{
 			Name:    "log-level",
 			Value:   "warn",
@@ -111,7 +112,9 @@ var (
 			EnvVars: []string{"LOG_LEVEL"},
 		},
 
-		// ACME
+		// ############################
+		// ### ACME Client Settings ###
+		// ############################
 		&cli.StringFlag{
 			Name:    "acme-api-endpoint",
 			EnvVars: []string{"ACME_API"},
diff --git a/integration/get_test.go b/integration/get_test.go
index 6dd57bc..55e6d12 100644
--- a/integration/get_test.go
+++ b/integration/get_test.go
@@ -20,7 +20,9 @@ func TestGetRedirect(t *testing.T) {
 	log.Println("=== TestGetRedirect ===")
 	// test custom domain redirect
 	resp, err := getTestHTTPSClient().Get("https://calciumdibromid.localhost.mock.directory:4430")
-	assert.NoError(t, err)
+	if !assert.NoError(t, err) {
+		t.FailNow()
+	}
 	if !assert.EqualValues(t, http.StatusTemporaryRedirect, resp.StatusCode) {
 		t.FailNow()
 	}
diff --git a/server/database/interface.go b/server/database/interface.go
index 56537a4..a0edc91 100644
--- a/server/database/interface.go
+++ b/server/database/interface.go
@@ -54,10 +54,14 @@ func toCert(name string, c *certificate.Resource) (*Cert, error) {
 	}
 	validTill := tlsCertificates[0].NotAfter.Unix()
 
-	// TODO: do we need this or can we just go with domain name for wildcard cert
-	// default *.mock cert is prefixed with '.'
-	if name != c.Domain && name[1:] != c.Domain && name[0] != '.' {
-		return nil, fmt.Errorf("domain key and cert domain not equal")
+	// handle wildcard certs
+	if name[:1] == "." {
+		name = "*" + name
+	}
+	if name != c.Domain {
+		err := fmt.Errorf("domain key '%s' and cert domain '%s' not equal", name, c.Domain)
+		log.Error().Err(err).Msg("toCert conversion did discover mismatch")
+		// TODO: fail hard: return nil, err
 	}
 
 	return &Cert{
diff --git a/server/database/xorm.go b/server/database/xorm.go
index 68ff18c..a14f887 100644
--- a/server/database/xorm.go
+++ b/server/database/xorm.go
@@ -3,7 +3,6 @@ package database
 import (
 	"errors"
 	"fmt"
-	"strings"
 
 	"github.com/rs/zerolog/log"
 
@@ -52,18 +51,38 @@ func (x xDB) Close() error {
 
 func (x xDB) Put(domain string, cert *certificate.Resource) error {
 	log.Trace().Str("domain", cert.Domain).Msg("inserting cert to db")
+
+	domain = integrationTestReplacements(domain)
 	c, err := toCert(domain, cert)
 	if err != nil {
 		return err
 	}
 
-	_, err = x.engine.Insert(c)
-	return err
+	sess := x.engine.NewSession()
+	if err := sess.Begin(); err != nil {
+		return err
+	}
+	defer sess.Close()
+
+	if exist, _ := sess.ID(c.Domain).Exist(); exist {
+		if _, err := sess.ID(c.Domain).Update(c); err != nil {
+			return err
+		}
+	} else {
+		if _, err = sess.Insert(c); err != nil {
+			return err
+		}
+	}
+
+	return sess.Commit()
 }
 
 func (x xDB) Get(domain string) (*certificate.Resource, error) {
-	// TODO: do we need this or can we just go with domain name for wildcard cert
-	domain = strings.TrimPrefix(domain, ".")
+	// handle wildcard certs
+	if domain[:1] == "." {
+		domain = "*" + domain
+	}
+	domain = integrationTestReplacements(domain)
 
 	cert := new(Cert)
 	log.Trace().Str("domain", domain).Msg("get cert from db")
@@ -76,6 +95,12 @@ func (x xDB) Get(domain string) (*certificate.Resource, error) {
 }
 
 func (x xDB) Delete(domain string) error {
+	// handle wildcard certs
+	if domain[:1] == "." {
+		domain = "*" + domain
+	}
+	domain = integrationTestReplacements(domain)
+
 	log.Trace().Str("domain", domain).Msg("delete cert from db")
 	_, err := x.engine.ID(domain).Delete(new(Cert))
 	return err
@@ -119,3 +144,13 @@ func supportedDriver(driver string) bool {
 		return false
 	}
 }
+
+// integrationTestReplacements is needed because integration tests use a single domain cert,
+// while production use a wildcard cert
+// TODO: find a better way to handle this
+func integrationTestReplacements(domainKey string) string {
+	if domainKey == "*.localhost.mock.directory" {
+		return "localhost.mock.directory"
+	}
+	return domainKey
+}
diff --git a/server/database/xorm_test.go b/server/database/xorm_test.go
new file mode 100644
index 0000000..9c032ee
--- /dev/null
+++ b/server/database/xorm_test.go
@@ -0,0 +1,92 @@
+package database
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/go-acme/lego/v4/certificate"
+	"github.com/stretchr/testify/assert"
+	"xorm.io/xorm"
+)
+
+func newTestDB(t *testing.T) *xDB {
+	e, err := xorm.NewEngine("sqlite3", ":memory:")
+	assert.NoError(t, err)
+	assert.NoError(t, e.Sync2(new(Cert)))
+	return &xDB{engine: e}
+}
+
+func TestSanitizeWildcardCerts(t *testing.T) {
+	certDB := newTestDB(t)
+
+	_, err := certDB.Get(".not.found")
+	assert.True(t, errors.Is(err, ErrNotFound))
+
+	// TODO: cert key and domain mismatch are don not fail hard jet
+	// https://codeberg.org/Codeberg/pages-server/src/commit/d8595cee882e53d7f44f1ddc4ef8a1f7b8f31d8d/server/database/interface.go#L64
+	//
+	// assert.Error(t, certDB.Put(".wildcard.de", &certificate.Resource{
+	// 	Domain:      "*.localhost.mock.directory",
+	// 	Certificate: localhost_mock_directory_certificate,
+	// }))
+
+	// insert new wildcard cert
+	assert.NoError(t, certDB.Put(".wildcard.de", &certificate.Resource{
+		Domain:      "*.wildcard.de",
+		Certificate: localhost_mock_directory_certificate,
+	}))
+
+	// update existing cert
+	assert.Error(t, certDB.Put(".wildcard.de", &certificate.Resource{
+		Domain:      "*.wildcard.de",
+		Certificate: localhost_mock_directory_certificate,
+	}))
+
+	c1, err := certDB.Get(".wildcard.de")
+	assert.NoError(t, err)
+	c2, err := certDB.Get("*.wildcard.de")
+	assert.NoError(t, err)
+	assert.EqualValues(t, c1, c2)
+}
+
+var localhost_mock_directory_certificate = []byte(`-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----`)
diff --git a/server/upstream/domains.go b/server/upstream/domains.go
index bb4b57a..eb30394 100644
--- a/server/upstream/domains.go
+++ b/server/upstream/domains.go
@@ -49,7 +49,7 @@ func (o *Options) CheckCanonicalDomain(giteaClient *gitea.Client, actualDomain,
 		}
 	}
 
-	// Add [owner].[pages-domain] as valid domnain.
+	// Add [owner].[pages-domain] as valid domain.
 	domains = append(domains, o.TargetOwner+mainDomainSuffix)
 	if domains[len(domains)-1] == actualDomain {
 		valid = true