diff --git a/apps/mobile-shell/scripts/check-config.mjs b/apps/mobile-shell/scripts/check-config.mjs
index 5da77bed6..2a334f46a 100644
--- a/apps/mobile-shell/scripts/check-config.mjs
+++ b/apps/mobile-shell/scripts/check-config.mjs
@@ -46,6 +46,11 @@ const badgePath = new URL('../src/host-bridge/badge.ts', import.meta.url);
 const badgeSource = fs.readFileSync(badgePath, 'utf8');
 const badgeTestPath = new URL('../src/host-bridge/badge.test.ts', import.meta.url);
 const badgeTestSource = fs.readFileSync(badgeTestPath, 'utf8');
+const capabilitiesPath = new URL(
+  '../src/host-bridge/capabilities.ts',
+  import.meta.url,
+);
+const capabilitiesSource = fs.readFileSync(capabilitiesPath, 'utf8');
 const capabilitiesTestPath = new URL(
   '../src/host-bridge/capabilities.test.ts',
   import.meta.url,
@@ -1163,6 +1168,15 @@ for (const profileSource of [
   }
 }
 
+for (const snippet of [
+  'export const MOBILE_HOST_CAPABILITIES =\n  HOST_BRIDGE_EXPO_MOBILE_BASE_CAPABILITIES;',
+  'export const IOS_MOBILE_HOST_CAPABILITIES =\n  HOST_BRIDGE_EXPO_MOBILE_IOS_CAPABILITIES;',
+]) {
+  if (!capabilitiesSource.includes(snippet)) {
+    throw new Error(`mobile shell capability profile must stay directly shared: ${snippet}`);
+  }
+}
+
 if (
   /export const MOBILE_HOST_CAPABILITIES[^=]*= \[/.test(hostBridgeSource) ||
   /export const IOS_MOBILE_HOST_CAPABILITIES[^=]*= \[/.test(hostBridgeSource)