diff --git a/backend/api/documents.py b/backend/api/documents.py
index 40cb68e..97ed572 100644
--- a/backend/api/documents.py
+++ b/backend/api/documents.py
@@ -345,7 +345,7 @@ async def confirm_upload(
             "  AND (used_bytes + :delta) <= limit_bytes "
             "RETURNING used_bytes, limit_bytes"
         ),
-        {"delta": size, "uid": str(doc.user_id).replace("-", "")},
+        {"delta": size, "uid": str(doc.user_id)},
     )
     row = result.fetchone()
 
@@ -353,7 +353,7 @@ async def confirm_upload(
         # Quota exceeded — fetch current quota state for the 413 body
         quota_result = await session.execute(
             text("SELECT used_bytes, limit_bytes FROM quotas WHERE user_id = :uid"),
-            {"uid": str(doc.user_id).replace("-", "")},
+            {"uid": str(doc.user_id)},
         )
         q = quota_result.fetchone()
         # Delete the pending Document row and best-effort remove the MinIO object