diff --git a/lib/getLiveKitURL.test.ts b/lib/getLiveKitURL.test.ts
index b8afac7..404cac8 100644
--- a/lib/getLiveKitURL.test.ts
+++ b/lib/getLiveKitURL.test.ts
@@ -10,7 +10,7 @@ describe('getLiveKitURL', () => {
   it('inserts the region into livekit.cloud URLs', () => {
     const url = 'https://myproject.livekit.cloud';
     const region = 'eu';
-    expect(getLiveKitURL(url, region)).toBe('https://myproject.eu.myproject.livekit.cloud/');
+    expect(getLiveKitURL(url, region)).toBe('https://myproject.eu.livekit.cloud/');
   });
 
   it('returns the original URL for non-livekit.cloud hosts, even with region', () => {
@@ -22,8 +22,6 @@ describe('getLiveKitURL', () => {
   it('handles URLs with paths and query params', () => {
     const url = 'https://myproject.livekit.cloud/room?foo=bar';
     const region = 'ap';
-    expect(getLiveKitURL(url, region)).toBe(
-      'https://myproject.ap.myproject.livekit.cloud/room?foo=bar',
-    );
+    expect(getLiveKitURL(url, region)).toBe('https://myproject.ap.livekit.cloud/room?foo=bar');
   });
 });
diff --git a/lib/getLiveKitURL.ts b/lib/getLiveKitURL.ts
index 09f2750..94192de 100644
--- a/lib/getLiveKitURL.ts
+++ b/lib/getLiveKitURL.ts
@@ -1,8 +1,8 @@
 export function getLiveKitURL(projectUrl: string, region: string | null): string {
   const url = new URL(projectUrl);
   if (region && url.hostname.includes('livekit.cloud')) {
-    const hostParts = url.hostname.split('.');
-    const regionURL = [hostParts[0], region, ...hostParts].join('.');
+    const [projectId, ...hostParts] = url.hostname.split('.');
+    const regionURL = [projectId, region, ...hostParts].join('.');
     url.hostname = regionURL;
   }
   return url.toString();