diff --git a/packages/plugins/@nocobase/plugin-multi-portal/src/client-v2/__tests__/layoutRegistration.strict.test.ts b/packages/plugins/@nocobase/plugin-multi-portal/src/client-v2/__tests__/layoutRegistration.strict.test.ts
index d8548a48e67..2bb9736c1d6 100644
--- a/packages/plugins/@nocobase/plugin-multi-portal/src/client-v2/__tests__/layoutRegistration.strict.test.ts
+++ b/packages/plugins/@nocobase/plugin-multi-portal/src/client-v2/__tests__/layoutRegistration.strict.test.ts
@@ -89,12 +89,26 @@ describe('Multi Portal runtime registration failures', () => {
     expect(layoutManager.registerLayout).not.toHaveBeenCalled();
   });
 
-  it('registers only no-code portals and skips every other portal type', () => {
+  it('treats empty portal types as no-code portals', () => {
+    const layoutManager = createLayoutManager();
+    const emptyTypePortals = [
+      { ...portal, uid: 'missing-type-portal', portalName: 'missingType', portalType: undefined },
+      { ...portal, uid: 'null-type-portal', portalName: 'nullType', portalType: null },
+      { ...portal, uid: 'empty-type-portal', portalName: 'emptyType', portalType: '' },
+    ];
+
+    expect(registerMultiPortalRecords(layoutManager, emptyTypePortals)).toEqual([
+      'missing-type-portal',
+      'null-type-portal',
+      'empty-type-portal',
+    ]);
+    expect(layoutManager.registerLayout).toHaveBeenCalledTimes(3);
+  });
+
+  it('skips ai and unknown non-empty portal types', () => {
     const layoutManager = createLayoutManager();
     const skippedPortals = [
       { ...portal, uid: 'ai-portal', portalName: 'ai', portalType: 'ai' },
-      { ...portal, uid: 'missing-type-portal', portalName: 'missingType', portalType: undefined },
-      { ...portal, uid: 'empty-type-portal', portalName: 'emptyType', portalType: '' },
       { ...portal, uid: 'unknown-type-portal', portalName: 'unknownType', portalType: 'custom' },
     ];
 
diff --git a/packages/plugins/@nocobase/plugin-multi-portal/src/client-v2/layoutRegistration.ts b/packages/plugins/@nocobase/plugin-multi-portal/src/client-v2/layoutRegistration.ts
index d1d5acb63f9..99fa10d0d29 100644
--- a/packages/plugins/@nocobase/plugin-multi-portal/src/client-v2/layoutRegistration.ts
+++ b/packages/plugins/@nocobase/plugin-multi-portal/src/client-v2/layoutRegistration.ts
@@ -16,7 +16,7 @@ export { getMultiPortalRouteScopeCacheKey };
 export type MultiPortalRuntimeRecord = {
   uid: string;
   title?: string;
-  portalType?: string;
+  portalType?: string | null;
   portalName: string;
   routePath: string;
   authCheck: boolean;
@@ -74,7 +74,7 @@ const layoutModeMobileRegisterOptions = {
 } satisfies Pick<LayoutRegisterOptions, 'layoutModelClass' | 'rootPageModelClass' | 'childPageModelClass'>;
 
 function isRuntimePortal(record: MultiPortalRuntimeRecord) {
-  return record.portalType === 'no-code';
+  return (record.portalType || 'no-code') === 'no-code';
 }
 
 export function toMultiPortalLayoutRegisterOptions(record: MultiPortalRuntimeRecord): LayoutRegisterOptions | null {