diff --git a/src/media/host.ts b/src/media/host.ts
index 28a45c086..3127c119e 100644
--- a/src/media/host.ts
+++ b/src/media/host.ts
@@ -42,7 +42,7 @@ export async function ensureMediaHosted(
   }
   if (needsServerStart && opts.startServer) {
     if (!mediaServer) {
-      mediaServer = await startMediaServer(port, TTL_MS, undefined, runtime);
+      mediaServer = await startMediaServer(port, TTL_MS, runtime);
       logInfo(
         `🦞 Started temporary media host on http://127.0.0.1:${port}/media/:id (TTL ${TTL_MS / 1000}s)`,
         runtime,
diff --git a/src/media/server.ts b/src/media/server.ts
index 1b1430e32..aaca6577b 100644
--- a/src/media/server.ts
+++ b/src/media/server.ts
@@ -83,8 +83,8 @@ export function attachMediaRoutes(
 export async function startMediaServer(
   port: number,
   ttlMs = DEFAULT_TTL_MS,
-  host = "127.0.0.1",
   runtime: RuntimeEnv = defaultRuntime,
+  host = "127.0.0.1",
 ): Promise<Server> {
   const app = express();
   attachMediaRoutes(app, ttlMs, runtime);