diff --git a/src/dev-server/dev-server-utils.ts b/src/dev-server/dev-server-utils.ts
index ffd99444513..4e3ba3ade22 100644
--- a/src/dev-server/dev-server-utils.ts
+++ b/src/dev-server/dev-server-utils.ts
@@ -88,14 +88,23 @@ export function isSsrStaticDataPath(pathname: string) {
   return fileName === 'page.state.json';
 }
 
-export function getSsrStaticDataPath(pathname: string) {
-  const parts = pathname.split('/');
+export function getSsrStaticDataPath(req: d.HttpRequest) {
+  const parts = req.url.href.split('/');
   let fileName = parts[parts.length - 1];
   const fileNameParts = fileName.split('?');
 
   parts.pop();
+
+  let ssrPath = new URL(parts.join('/')).href;
+  if (!ssrPath.endsWith('/') && req.headers) {
+    const h = new Headers(req.headers);
+    if (h.get('referer').endsWith('/')) {
+      ssrPath += '/';
+    }
+  }
+
   return {
-    ssrPath: parts.join('/'),
+    ssrPath,
     fileName: fileNameParts[0],
     hasQueryString: typeof fileNameParts[1] === 'string' && fileNameParts[1].length > 0,
   };
diff --git a/src/dev-server/ssr-request.ts b/src/dev-server/ssr-request.ts
index 64e28f1b2d2..516ff2bf45a 100644
--- a/src/dev-server/ssr-request.ts
+++ b/src/dev-server/ssr-request.ts
@@ -70,7 +70,7 @@ export async function ssrStaticDataRequest(
 
     if (!diagnostics.some(diagnostic => diagnostic.level === 'error')) {
       try {
-        const { ssrPath, hasQueryString } = getSsrStaticDataPath(req.url.href);
+        const { ssrPath, hasQueryString } = getSsrStaticDataPath(req);
         const url = new URL(ssrPath, req.url);
 
         const opts = getSsrHydrateOptions(devServerConfig, serverCtx, url);
diff --git a/src/dev-server/test/util.spec.ts b/src/dev-server/test/util.spec.ts
index 9ad3f57a130..87c8f4bdb5e 100644
--- a/src/dev-server/test/util.spec.ts
+++ b/src/dev-server/test/util.spec.ts
@@ -164,15 +164,48 @@ describe('getDevServerClientUrl', () => {
     expect(isSsrStaticDataPath('http://stenciljs.com/page.state.json')).toBe(true);
   });
 
-  it('getSsrStaticDataPath', () => {
-    let r = getSsrStaticDataPath('http://stenciljs.com/page.static.json');
+  it('getSsrStaticDataPath, root', () => {
+    const req: d.HttpRequest = {
+      url: new URL('http://stenciljs.com/page.static.json'),
+      method: 'GET',
+      acceptHeader: '',
+      searchParams: null,
+    };
+    let r = getSsrStaticDataPath(req);
     expect(r.fileName).toBe('page.static.json');
     expect(r.hasQueryString).toBe(false);
-    expect(r.ssrPath).toBe('http://stenciljs.com');
+    expect(r.ssrPath).toBe('http://stenciljs.com/');
+  });
 
-    r = getSsrStaticDataPath('http://stenciljs.com/blog/page.static.json?1234');
+  it('getSsrStaticDataPath, no trailing slash refer', () => {
+    const req: d.HttpRequest = {
+      url: new URL('http://stenciljs.com/blog/page.static.json?v=1234'),
+      method: 'GET',
+      acceptHeader: '',
+      searchParams: null,
+      headers: {
+        Referer: 'http://stenciljs.com/page',
+      },
+    };
+    const r = getSsrStaticDataPath(req);
     expect(r.fileName).toBe('page.static.json');
     expect(r.hasQueryString).toBe(true);
     expect(r.ssrPath).toBe('http://stenciljs.com/blog');
   });
+
+  it('getSsrStaticDataPath, with trailing slash refer', () => {
+    const req: d.HttpRequest = {
+      url: new URL('http://stenciljs.com/blog/page.static.json?v=1234'),
+      method: 'GET',
+      acceptHeader: '',
+      searchParams: null,
+      headers: {
+        Referer: 'http://stenciljs.com/page/',
+      },
+    };
+    const r = getSsrStaticDataPath(req);
+    expect(r.fileName).toBe('page.static.json');
+    expect(r.hasQueryString).toBe(true);
+    expect(r.ssrPath).toBe('http://stenciljs.com/blog/');
+  });
 });