diff --git a/apps/server/src/core/page/services/page.service.ts b/apps/server/src/core/page/services/page.service.ts
index aad9b1cf3..387abc5cc 100644
--- a/apps/server/src/core/page/services/page.service.ts
+++ b/apps/server/src/core/page/services/page.service.ts
@@ -810,6 +810,10 @@ export class PageService {
       throw new BadRequestException('Invalid move position');
     }
 
+    if (dto.parentPageId && dto.parentPageId === dto.pageId) {
+      throw new BadRequestException('A page cannot be its own parent');
+    }
+
     let parentPageId = null;
     if (movedPage.parentPageId === dto.parentPageId) {
       parentPageId = undefined;