diff --git a/gns3server/controller/project.py b/gns3server/controller/project.py
index 9373aaa5f..56f0efead 100644
--- a/gns3server/controller/project.py
+++ b/gns3server/controller/project.py
@@ -807,7 +807,7 @@ class Project:
                 with open(self._snapshot_conf_path, encoding="utf-8") as f:
                     self._snapshot_conf = json.load(f)
             except (OSError, UnicodeDecodeError, ValueError) as e:
-                raise aiohttp.web.HTTPConflict(text="Could not read snapshot config {}: {}".format(self._snapshot_conf_path, str(e)))
+                raise ControllerError(f"Could not read snapshot config {e}")
 
         # Load all legacy snapshots (.gns3project files) to create an initial snapshot config if it doesn't exist
         if os.path.exists(snapshot_dir) and not self._snapshot_conf:
@@ -843,7 +843,7 @@ class Project:
 
         self._snapshot_conf = []
         for snapshot in self._snapshots.values():
-            self._snapshot_conf.append(snapshot.__json__())
+            self._snapshot_conf.append(snapshot.asdict())
         try:
             with open(self._snapshot_conf_path, 'w+') as f:
                 json.dump(self._snapshot_conf, f, indent=4)
diff --git a/gns3server/schemas/controller/snapshots.py b/gns3server/schemas/controller/snapshots.py
index 90a7667eb..cb6657fba 100644
--- a/gns3server/schemas/controller/snapshots.py
+++ b/gns3server/schemas/controller/snapshots.py
@@ -16,6 +16,7 @@
 
 
 from pydantic import BaseModel, Field
+from typing import Optional
 from uuid import UUID
 
 
@@ -24,8 +25,8 @@ class SnapshotBase(BaseModel):
     Common properties for snapshot.
     """
 
-    name: str
-
+    name: str = Field(..., description="Name of the snapshot")
+    description: Optional[str] = Field(None, description="Description of the snapshot")
 
 class SnapshotCreate(SnapshotBase):
     """
@@ -39,4 +40,7 @@ class Snapshot(SnapshotBase):
 
     snapshot_id: UUID
     project_id: UUID
+    name: str = Field(..., description="Name of the snapshot")
+    filename: str = Field(..., description="Filename of the snapshot")
+    description: str = Field(..., description="Description of the snapshot")
     created_at: int = Field(..., description="Date of the snapshot (UTC timestamp)")
diff --git a/tests/api/routes/controller/test_snapshots.py b/tests/api/routes/controller/test_snapshots.py
index 531c3fe2a..5ef2cbe8b 100644
--- a/tests/api/routes/controller/test_snapshots.py
+++ b/tests/api/routes/controller/test_snapshots.py
@@ -75,4 +75,4 @@ class TestSnapshotRoutes:
     
         response = await client.post(app.url_path_for("create_snapshot", project_id=project.id), json={"name": "snap1"})
         assert response.status_code == status.HTTP_201_CREATED
-        assert len(os.listdir(os.path.join(project.path, "snapshots"))) == 1
+        assert len(os.listdir(os.path.join(project.path, "snapshots"))) == 2
diff --git a/tests/controller/test_snapshot.py b/tests/controller/test_snapshot.py
index b69be9ae8..8881b98f1 100644
--- a/tests/controller/test_snapshot.py
+++ b/tests/controller/test_snapshot.py
@@ -72,7 +72,7 @@ def test_json(project):
 
     # new style snapshot
     snapshot = Snapshot(project, name="snapshot_test2")
-    assert snapshot.__json__() == {
+    assert snapshot.asdict() == {
         "snapshot_id": snapshot._id,
         "name": "snapshot_test2",
         "project_id": project.id,