diff --git a/server/handler/handler_custom_domain.go b/server/handler/handler_custom_domain.go
index bec3b46..5ea7649 100644
--- a/server/handler/handler_custom_domain.go
+++ b/server/handler/handler_custom_domain.go
@@ -21,7 +21,7 @@ func handleCustomDomain(log zerolog.Logger, ctx *context.Context, giteaClient *g
 	dnsLookupCache, canonicalDomainCache cache.SetGetKey,
 ) {
 	// Serve pages from custom domains
-	targetOwner, targetRepo, targetBranch := dns.GetTargetFromDNS(trimmedHost, string(mainDomainSuffix), dnsLookupCache)
+	targetOwner, targetRepo, targetBranch := dns.GetTargetFromDNS(trimmedHost, mainDomainSuffix, dnsLookupCache)
 	if targetOwner == "" {
 		html.ReturnErrorPage(ctx,
 			"could not obtain repo owner from custom domain",
@@ -46,13 +46,13 @@ func handleCustomDomain(log zerolog.Logger, ctx *context.Context, giteaClient *g
 		TargetBranch:  targetBranch,
 		TargetPath:    path.Join(pathParts...),
 	}, canonicalLink); works {
-		canonicalDomain, valid := targetOpt.CheckCanonicalDomain(giteaClient, trimmedHost, string(mainDomainSuffix), canonicalDomainCache)
+		canonicalDomain, valid := targetOpt.CheckCanonicalDomain(giteaClient, trimmedHost, mainDomainSuffix, canonicalDomainCache)
 		if !valid {
 			html.ReturnErrorPage(ctx, "domain not specified in <code>.domains</code> file", http.StatusMisdirectedRequest)
 			return
 		} else if canonicalDomain != trimmedHost {
 			// only redirect if the target is also a codeberg page!
-			targetOwner, _, _ = dns.GetTargetFromDNS(strings.SplitN(canonicalDomain, "/", 2)[0], string(mainDomainSuffix), dnsLookupCache)
+			targetOwner, _, _ = dns.GetTargetFromDNS(strings.SplitN(canonicalDomain, "/", 2)[0], mainDomainSuffix, dnsLookupCache)
 			if targetOwner != "" {
 				ctx.Redirect("https://"+canonicalDomain+string(targetOpt.TargetPath), http.StatusTemporaryRedirect)
 				return