diff --git a/src/core/config/resolvers/route-rules.ts b/src/core/config/resolvers/route-rules.ts
index 2071b42ca3..15a899c53d 100644
--- a/src/core/config/resolvers/route-rules.ts
+++ b/src/core/config/resolvers/route-rules.ts
@@ -5,6 +5,7 @@ import type {
   NitroRouteConfig,
   NitroRouteRules,
 } from "nitropack/types";
+import { withLeadingSlash } from "ufo";
 
 export async function resolveRouteRulesOptions(options: NitroOptions) {
   // Backward compatibility for options.routes
@@ -17,8 +18,9 @@ export function normalizeRouteRules(
   config: NitroConfig
 ): Record<string, NitroRouteRules> {
   const normalizedRules: Record<string, NitroRouteRules> = {};
-  for (const path in config.routeRules) {
+  for (let path in config.routeRules) {
     const routeConfig = config.routeRules[path] as NitroRouteConfig;
+    path = withLeadingSlash(path);
     const routeRules: NitroRouteRules = {
       ...routeConfig,
       redirect: undefined,
diff --git a/test/fixture/nitro.config.ts b/test/fixture/nitro.config.ts
index c9f35e67d2..61cc76149f 100644
--- a/test/fixture/nitro.config.ts
+++ b/test/fixture/nitro.config.ts
@@ -95,6 +95,7 @@ export default defineNitroConfig({
     "/rules/_/cached/noncached": { cache: false, swr: false, isr: false },
     "/rules/_/cached/**": { swr: true },
     "/api/proxy/**": { proxy: "/api/echo" },
+    "**": { headers: { "x-test": "test" } },
   },
   prerender: {
     crawlLinks: true,
diff --git a/test/presets/netlify-legacy.test.ts b/test/presets/netlify-legacy.test.ts
index 5de5771d7f..a122c62188 100644
--- a/test/presets/netlify-legacy.test.ts
+++ b/test/presets/netlify-legacy.test.ts
@@ -82,19 +82,21 @@ describe("nitro:preset:netlify-legacy", async () => {
         );
 
         expect(headers).toMatchInlineSnapshot(`
-        "/rules/headers
-          cache-control: s-maxage=60
-        /rules/cors
-          access-control-allow-origin: *
-          access-control-allow-methods: GET
-          access-control-allow-headers: *
-          access-control-max-age: 0
-        /rules/nested/*
-          x-test: test
-        /build/*
-          cache-control: public, max-age=3600, immutable
-        "
-      `);
+          "/rules/headers
+            cache-control: s-maxage=60
+          /rules/cors
+            access-control-allow-origin: *
+            access-control-allow-methods: GET
+            access-control-allow-headers: *
+            access-control-max-age: 0
+          /rules/nested/*
+            x-test: test
+          /build/*
+            cache-control: public, max-age=3600, immutable
+          /*
+            x-test: test
+          "
+        `);
       });
       it("should write config.json", async () => {
         const config = await fsp
diff --git a/test/presets/netlify.test.ts b/test/presets/netlify.test.ts
index 6cb2b58ea1..9740795250 100644
--- a/test/presets/netlify.test.ts
+++ b/test/presets/netlify.test.ts
@@ -62,19 +62,21 @@ describe("nitro:preset:netlify", async () => {
         );
 
         expect(headers).toMatchInlineSnapshot(`
-        "/rules/headers
-          cache-control: s-maxage=60
-        /rules/cors
-          access-control-allow-origin: *
-          access-control-allow-methods: GET
-          access-control-allow-headers: *
-          access-control-max-age: 0
-        /rules/nested/*
-          x-test: test
-        /build/*
-          cache-control: public, max-age=3600, immutable
-        "
-      `);
+          "/rules/headers
+            cache-control: s-maxage=60
+          /rules/cors
+            access-control-allow-origin: *
+            access-control-allow-methods: GET
+            access-control-allow-headers: *
+            access-control-max-age: 0
+          /rules/nested/*
+            x-test: test
+          /build/*
+            cache-control: public, max-age=3600, immutable
+          /*
+            x-test: test
+          "
+        `);
       });
 
       it("writes config.json", async () => {
diff --git a/test/presets/vercel.test.ts b/test/presets/vercel.test.ts
index 25ad76cfe2..3b10b698b3 100644
--- a/test/presets/vercel.test.ts
+++ b/test/presets/vercel.test.ts
@@ -96,6 +96,12 @@ describe("nitro:preset:vercel", async () => {
                 },
                 "src": "/build/(.*)",
               },
+              {
+                "headers": {
+                  "x-test": "test",
+                },
+                "src": "/(.*)",
+              },
               {
                 "continue": true,
                 "headers": {