diff --git a/CHANGELOG.md b/CHANGELOG.md
index 21581c67e..bc8dd9e29 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -47,6 +47,10 @@ All notable changes to Bambuddy will be documented in this file.
   - Placeholder text shows expected format (e.g., "DD/MM/YYYY" or "HH:MM AM/PM")
   - Added date utilities: `formatDateInput`, `parseDateInput`, `getDatePlaceholder`
   - Added time utilities: `formatTimeInput`, `parseTimeInput`, `getTimePlaceholder`
+- **500 Error on Archive Detail Page**:
+  - Fixed internal server error when viewing individual archive details
+  - Root cause: `project` relationship not eagerly loaded in `get_archive()` service method
+  - Async SQLAlchemy requires explicit eager loading; lazy loading is not supported
 
 ## [0.1.6.2] - 2026-02-02
 
diff --git a/backend/app/services/archive.py b/backend/app/services/archive.py
index 840be0999..39037e703 100644
--- a/backend/app/services/archive.py
+++ b/backend/app/services/archive.py
@@ -933,11 +933,13 @@ class ArchiveService:
         return archive
 
     async def get_archive(self, archive_id: int) -> PrintArchive | None:
-        """Get an archive by ID with creator loaded."""
+        """Get an archive by ID with relationships loaded."""
         from sqlalchemy.orm import selectinload
 
         result = await self.db.execute(
-            select(PrintArchive).options(selectinload(PrintArchive.created_by)).where(PrintArchive.id == archive_id)
+            select(PrintArchive)
+            .options(selectinload(PrintArchive.created_by), selectinload(PrintArchive.project))
+            .where(PrintArchive.id == archive_id)
         )
         return result.scalar_one_or_none()