diff --git a/backend/bec_atlas/router/scan_router.py b/backend/bec_atlas/router/scan_router.py
index 466834c..d138f15 100644
--- a/backend/bec_atlas/router/scan_router.py
+++ b/backend/bec_atlas/router/scan_router.py
@@ -84,6 +84,9 @@ class ScanRouter(BaseRouter):
             filter = json.loads(filter)
             filters.update(filter)
 
+        if sort:
+            sort = json.loads(sort)
+
         return self.db.find(
             "scans",
             filters,
diff --git a/backend/bec_atlas/router/session_router.py b/backend/bec_atlas/router/session_router.py
index e2711eb..8a919a1 100644
--- a/backend/bec_atlas/router/session_router.py
+++ b/backend/bec_atlas/router/session_router.py
@@ -67,6 +67,10 @@ class SessionRouter(BaseRouter):
                 for field in fields
                 if field in Session.model_json_schema()["properties"].keys()
             }
+
+        if sort:
+            sort = json.loads(sort)
+
         return self.db.find(
             "sessions",
             filter,