diff --git a/cli/bench/http/deno_http_serve.js b/cli/bench/http/deno_http_serve.js
index 989dc82e8a..6d2cabd031 100644
--- a/cli/bench/http/deno_http_serve.js
+++ b/cli/bench/http/deno_http_serve.js
@@ -8,4 +8,4 @@ function handler() {
   return new Response("Hello World");
 }
 
-serve({ hostname, port, reusePort: true }, handler);
+serve({ hostname, port: Number(port), reusePort: true }, handler);
diff --git a/cli/bench/http/deno_reactdom_ssr_flash.jsx b/cli/bench/http/deno_reactdom_ssr_flash.jsx
index 42c9556245..c23748832f 100644
--- a/cli/bench/http/deno_reactdom_ssr_flash.jsx
+++ b/cli/bench/http/deno_reactdom_ssr_flash.jsx
@@ -18,6 +18,6 @@ const headers = {
   },
 };
 
-serve({ hostname, port }, async () => {
+serve({ hostname, port: Number(port) }, async () => {
   return new Response(await renderToReadableStream(<App />), headers);
 });