diff --git a/src/views/ad-unit.tsx b/src/views/ad-unit.tsx
index a61b4d7..cc9c666 100644
--- a/src/views/ad-unit.tsx
+++ b/src/views/ad-unit.tsx
@@ -38,10 +38,14 @@ const NO_AD_SEGMENTS = new Set([
   'revisions',
 ]);
 
-/** Public, indexable pages only. A noindex page is a dashboard or a one-off flow. */
+/**
+ * Public, indexable pages only. A noindex page is a dashboard or a one-off flow,
+ * and the homepage carries no ad.
+ */
 export function showsAd(path: string, noindex?: boolean): boolean {
   if (noindex) return false;
   const first = path.split(/[/?#]/)[1] ?? '';
+  if (first === '') return false;
   return !NO_AD_SEGMENTS.has(first);
 }
 
diff --git a/test/views.test.ts b/test/views.test.ts
index 508ecef..08a47a2 100644
--- a/test/views.test.ts
+++ b/test/views.test.ts
@@ -561,7 +561,7 @@ test('the ad unit is a crawlproof frame on public pages only, and the policy fra
   const { showsAd, AD_SLOT } = await import('../dist/views/ad-unit.js');
   const { Layout } = await import('../dist/views/layout.js');
   const { securityHeaders } = await import('../dist/server/middleware.js');
-  assert.equal(showsAd('/', false), true);
+  assert.equal(showsAd('/', false), false, 'the homepage carries no ad');
   assert.equal(showsAd('/jobs/abc', false), true);
   assert.equal(showsAd('/me/settings', false), false);
   assert.equal(showsAd('/post-a-job', false), false);
@@ -579,10 +579,11 @@ test('the ad unit is a crawlproof frame on public pages only, and the policy fra
         children: 'x',
       }),
     );
-  const home = page('/');
-  assert.equal(home.match(/crawlproof\.com\/api\/ads\/frame/g)?.length, 1, 'exactly one unit');
-  assert.ok(home.includes(`slot=${AD_SLOT}&format=text_link`), home);
-  assert.ok(!home.includes('theme='), 'the frame answers prefers-color-scheme itself');
+  assert.ok(!page('/').includes('/api/ads/frame'), 'no ad on the homepage');
+  const job = page('/jobs/abc');
+  assert.equal(job.match(/crawlproof\.com\/api\/ads\/frame/g)?.length, 1, 'exactly one unit');
+  assert.ok(job.includes(`slot=${AD_SLOT}&format=text_link`), job);
+  assert.ok(!job.includes('theme='), 'the frame answers prefers-color-scheme itself');
   assert.ok(!page('/inbox').includes('/api/ads/frame'), 'no ad inside the inbox');
 
   const headers = new Headers();
diff --git a/web/public/app.css b/web/public/app.css
index 7323029..4ca7150 100644
--- a/web/public/app.css
+++ b/web/public/app.css
@@ -1104,7 +1104,7 @@ a.badge-plain:hover .badge {
 
 /* CrawlProof ad unit (src/views/ad-unit.tsx): one fluid text_link frame at the top of the content. */
 .ad-unit {
-  margin: 0 0 1.5rem;
+  margin: 0 0 0.75rem;
 }
 .ad-unit iframe {
   display: block;
diff --git a/web/public/sw.js b/web/public/sw.js
index 65f77aa..302caaf 100644
--- a/web/public/sw.js
+++ b/web/public/sw.js
@@ -13,7 +13,7 @@
  * drifted, which is the only version of this rule that survives contact.
  */
 
-const VERSION = 'b264b667';
+const VERSION = '3a3325d0';
 const SHELL = `shell-${VERSION}`;
 const ASSETS = ['/assets/app.css', '/assets/tokens.css', '/assets/icon.svg'];