diff --git a/src/infra/environment.ts b/src/infra/environment.ts
index 6aea983..b3ec06b 100644
--- a/src/infra/environment.ts
+++ b/src/infra/environment.ts
@@ -31,9 +31,11 @@ async function writeGiteaCredentials(file: string, gitea: GiteaAccount,
   env: Record<string, string | undefined>): Promise<void> {
   const token = env[gitea.tokenEnv] ?? ''
   if (!token) throw new SetupError('giteaTokenMissing', { name: gitea.tokenEnv })
-  const host = new URL(gitea.url).host
+  const origin = new URL(gitea.url).origin
+  const scheme = origin.slice(0, origin.indexOf('://'))
+  const host = origin.slice(origin.indexOf('://') + 3)
   const temporary = `${file}.${process.pid}.tmp`
-  await writeFile(temporary, `https://${encodeURIComponent(gitea.login)}:${encodeURIComponent(token)}@${host}\n`, { mode: 0o600 })
+  await writeFile(temporary, `${scheme}://${encodeURIComponent(gitea.login)}:${encodeURIComponent(token)}@${host}\n`, { mode: 0o600 })
   await rename(temporary, file)
 }