diff --git a/_data/site.js b/_data/site.js
index a52b165..3a0442f 100644
--- a/_data/site.js
+++ b/_data/site.js
@@ -5,6 +5,10 @@
  * All values have sensible defaults for initial deployment.
  */
 
+// Normalize site URL — replaces old domain after migration (secret may not be updated yet)
+const SITE_URL = (process.env.SITE_URL || "https://svemagie.net")
+  .replace("blog.giersig.eu", "svemagie.net");
+
 // Parse social links from env (format: "name|url|icon,name|url|icon")
 function parseSocialLinks(envVar) {
   if (!envVar) return [];
@@ -22,7 +26,7 @@ function getFediverseCreator() {
   // Primary: site's own ActivityPub actor (canonical fediverse identity)
   const apHandle = process.env.ACTIVITYPUB_HANDLE;
   if (apHandle) {
-    const domain = (process.env.SITE_URL || "https://example.com").replace(/^https?:\/\//, "");
+    const domain = SITE_URL.replace(/^https?:\/\//, "");
     return `@${apHandle}@${domain}`;
   }
   // Fallback: external Mastodon account (syndication target)
@@ -56,15 +60,14 @@ function buildSocialFromFeeds() {
   }
   const apHandle = process.env.ACTIVITYPUB_HANDLE;
   if (apHandle) {
-    const siteUrl = process.env.SITE_URL || "https://example.com";
-    links.push({ name: "ActivityPub", url: `${siteUrl}/activitypub/users/${apHandle}`, rel: "me", icon: "activitypub" });
+    links.push({ name: "ActivityPub", url: `${SITE_URL}/activitypub/users/${apHandle}`, rel: "me", icon: "activitypub" });
   }
   return links;
 }
 
 // site.url: no trailing slash — used as URL base for path concatenation ({{ site.url }}/path)
 // site.me / site.author.url: trailing slash — Mastodon rel="me" requires exact match
-const siteUrlBase = (process.env.SITE_URL || "https://example.com").replace(/\/$/, "");
+const siteUrlBase = SITE_URL.replace(/\/$/, "");
 const siteUrlWithSlash = siteUrlBase + "/";
 
 export default {
@@ -121,7 +124,7 @@ export default {
 
   // Webmentions configuration
   webmentions: {
-    domain: process.env.SITE_URL?.replace("https://", "").replace("http://", "") || "example.com",
+    domain: SITE_URL.replace("https://", "").replace("http://", ""),
   },
 
   // Fediverse creator for meta tag (e.g., @rick@rmendes.net)