diff --git a/apps/desktop/extensions/ai-sidebar/moshpit-drift.test.js b/apps/desktop/extensions/ai-sidebar/moshpit-drift.test.js
index fc2bc1a..bd46064 100644
--- a/apps/desktop/extensions/ai-sidebar/moshpit-drift.test.js
+++ b/apps/desktop/extensions/ai-sidebar/moshpit-drift.test.js
@@ -23,6 +23,12 @@ import * as pkg from '@moshcoder/moshpit-resolve';
 const HOSTNAMES = [
   'blue.eggs', 'a.b.c', '1.2.3.4', 'localhost', '', 'eggs', 'mosh.eggs',
   'blue.420', '420.blue', '1.420', '192.168', 'x.y', 'A.EGGS.',
+  // Dashes. The list carried none, so a divergence on whether a dash may
+  // appear inside a label read as green across all three implementations.
+  'lazy-loaded',
+  'blue.lazy-loaded',
+  'register-me.eggs',
+  'a-b.c-d',
 ];
 
 const LOOKUPS = [
diff --git a/apps/desktop/extensions/ai-sidebar/moshpit.js b/apps/desktop/extensions/ai-sidebar/moshpit.js
index 4a2078a..eb4233d 100644
--- a/apps/desktop/extensions/ai-sidebar/moshpit.js
+++ b/apps/desktop/extensions/ai-sidebar/moshpit.js
@@ -128,7 +128,14 @@ export function parseRegistryName(hostname) {
   const parts = host.split('.');
   if (parts.length !== 2) return null;
   const [label, tld] = parts;
-  const LABEL = /^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?$/;
+  // Letters and digits only, no dashes — the same rule the registry enforces.
+  // A dash is the cheapest way to mint a near-miss of an ending someone else
+  // holds (`.cryp-to` beside `.crypto`), and this namespace is one level deep
+  // and first come first served, so there is nothing to appeal into. Keeping
+  // this identical to the registry matters more than the rule itself: a name
+  // this accepts and the registry rejects forwards to a page saying it does
+  // not exist.
+  const LABEL = /^[a-z0-9]{1,63}$/;
   if (!LABEL.test(label) || !LABEL.test(tld)) return null;
   return { label, tld };
 }
diff --git a/apps/desktop/extensions/ai-sidebar/moshpit.test.js b/apps/desktop/extensions/ai-sidebar/moshpit.test.js
index 8b74628..ec51a7f 100644
--- a/apps/desktop/extensions/ai-sidebar/moshpit.test.js
+++ b/apps/desktop/extensions/ai-sidebar/moshpit.test.js
@@ -23,6 +23,15 @@ const HOSTNAMES = [
   'mosh',
   '',
   'x.y',
+  // Dashes. The list carried none, so a change to whether a dash may appear in
+  // a label could land in one implementation and not the other and every
+  // assertion below would still agree.
+  'lazy-loaded',
+  'blue.lazy-loaded',
+  'register-me.eggs',
+  'a-b.c-d',
+  '-bad.eggs',
+  'bad-.eggs',
 ];
 
 describe('moshpit.js is faithful to moshpit-resolve.ts', () => {
diff --git a/apps/desktop/src/moshpit-resolve.test.ts b/apps/desktop/src/moshpit-resolve.test.ts
index 8177e96..c0a9e46 100644
--- a/apps/desktop/src/moshpit-resolve.test.ts
+++ b/apps/desktop/src/moshpit-resolve.test.ts
@@ -307,3 +307,28 @@ describe('decideResolution — parking unpointed names', () => {
     expect(d.url).toBe('https://my.park/n/california.oranges');
   });
 });
+
+describe('dashes are not part of a Moshpit name', () => {
+  // Kept identical to the registry on purpose. A name this accepts and the
+  // registry rejects forwards the tab to a page saying it does not exist,
+  // which is a worse failure than refusing it here.
+  it('refuses a dash anywhere in either half', () => {
+    for (const host of [
+      'lazy-loaded.eggs',
+      'blue.lazy-loaded',
+      'register-me.eggs',
+      'a-b.c-d',
+      '-bad.eggs',
+      'bad-.eggs',
+    ]) {
+      expect(parseRegistryName(host), host).toBeNull();
+    }
+  });
+
+  it('still accepts what the registry accepts', () => {
+    expect(parseRegistryName('california.oranges')).toEqual({ label: 'california', tld: 'oranges' });
+    expect(parseRegistryName('blue.420')).toEqual({ label: 'blue', tld: '420' });
+    expect(parseRegistryName(`${'a'.repeat(63)}.eggs`)).toEqual({ label: 'a'.repeat(63), tld: 'eggs' });
+    expect(parseRegistryName(`${'a'.repeat(64)}.eggs`)).toBeNull();
+  });
+});
diff --git a/apps/desktop/src/moshpit-resolve.ts b/apps/desktop/src/moshpit-resolve.ts
index 9041097..8c27e83 100644
--- a/apps/desktop/src/moshpit-resolve.ts
+++ b/apps/desktop/src/moshpit-resolve.ts
@@ -237,7 +237,14 @@ export function parseRegistryName(hostname: string): { label: string; tld: strin
   // narrow an array to a 2-tuple from a length check. An empty label would
   // fail LABEL.test() anyway, so this guard changes no behavior.
   if (!label || !tld) return null;
-  const LABEL = /^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?$/;
+  // Letters and digits only, no dashes — the same rule the registry enforces.
+  // A dash is the cheapest way to mint a near-miss of an ending someone else
+  // holds (`.cryp-to` beside `.crypto`), and this namespace is one level deep
+  // and first come first served, so there is nothing to appeal into. Keeping
+  // this identical to the registry matters more than the rule itself: a name
+  // this accepts and the registry rejects forwards to a page saying it does
+  // not exist.
+  const LABEL = /^[a-z0-9]{1,63}$/;
   if (!LABEL.test(label) || !LABEL.test(tld)) return null;
   return { label, tld };
 }