diff --git a/gns3server/api/routes/controller/acl.py b/gns3server/api/routes/controller/acl.py
index 7febf226b..a454a1d61 100644
--- a/gns3server/api/routes/controller/acl.py
+++ b/gns3server/api/routes/controller/acl.py
@@ -80,7 +80,7 @@ def _iter_route_paths(routes: Sequence[BaseRoute], prefix: str = "", include_mou
                 yield from _iter_route_paths(mounted_routes, _join_paths(prefix, route.path), include_mounted_routes)
 
 
-@router.get("/endpoints", status_code=status.HTTP_201_CREATED, dependencies=[Depends(has_privilege("ACE.Audit"))])
+@router.get("/endpoints", dependencies=[Depends(has_privilege("ACE.Audit"))])
 async def endpoints(
     users_repo: UsersRepository = Depends(get_repository(UsersRepository)),
     rbac_repo: RbacRepository = Depends(get_repository(RbacRepository)),
diff --git a/gns3server/api/routes/controller/controller.py b/gns3server/api/routes/controller/controller.py
index e1f03b7e3..1b8667ec8 100644
--- a/gns3server/api/routes/controller/controller.py
+++ b/gns3server/api/routes/controller/controller.py
@@ -146,7 +146,7 @@ def get_iou_license() -> schemas.IOULicense:
 @router.put(
     "/iou_license",
     dependencies=[Depends(get_current_active_user)],
-    status_code=status.HTTP_201_CREATED,
+    status_code=status.HTTP_200_OK,
     response_model=schemas.IOULicense,
 )
 async def update_iou_license(iou_license: schemas.IOULicense) -> schemas.IOULicense:
diff --git a/gns3server/api/routes/controller/projects.py b/gns3server/api/routes/controller/projects.py
index 5b4e6e51e..264dd475b 100644
--- a/gns3server/api/routes/controller/projects.py
+++ b/gns3server/api/routes/controller/projects.py
@@ -495,7 +495,7 @@ async def close_project(project: Project = Depends(dep_project)) -> None:
 
 @router.post(
     "/{project_id}/open",
-    status_code=status.HTTP_201_CREATED,
+    status_code=status.HTTP_200_OK,
     response_model=schemas.Project,
     responses={**responses, 409: {"model": schemas.ErrorMessage, "description": "Could not open project"}},
     dependencies=[Depends(has_privilege("Project.Allocate"))],
diff --git a/gns3server/api/routes/controller/snapshots.py b/gns3server/api/routes/controller/snapshots.py
index eddcd029e..b0ed679f5 100644
--- a/gns3server/api/routes/controller/snapshots.py
+++ b/gns3server/api/routes/controller/snapshots.py
@@ -106,7 +106,7 @@ async def delete_snapshot(
 
 @router.post(
     "/{snapshot_id}/restore",
-    status_code=status.HTTP_201_CREATED,
+    status_code=status.HTTP_200_OK,
     response_model=schemas.Project,
     dependencies=[Depends(has_privilege("Snapshot.Restore"))],
 )
diff --git a/tests/api/routes/controller/test_acl.py b/tests/api/routes/controller/test_acl.py
index 8cbb19655..b67369ff4 100644
--- a/tests/api/routes/controller/test_acl.py
+++ b/tests/api/routes/controller/test_acl.py
@@ -161,3 +161,8 @@ class TestACLRoutes:
 
         # the ACE should have been deleted after deleting the project
         assert not await rbac_repo.get_ace_by_path(path)
+
+    async def test_get_endpoints(self, app: FastAPI, client: AsyncClient) -> None:
+
+        response = await client.get(app.url_path_for("endpoints"))
+        assert response.status_code == status.HTTP_200_OK
diff --git a/tests/api/routes/controller/test_controller.py b/tests/api/routes/controller/test_controller.py
index 4ef729543..d35d2ea17 100644
--- a/tests/api/routes/controller/test_controller.py
+++ b/tests/api/routes/controller/test_controller.py
@@ -70,3 +70,10 @@ class TestControllerRoutes:
 
         response = await client.get(app.url_path_for("statistics"))
         assert response.status_code == status.HTTP_200_OK
+
+    async def test_update_iou_license(self, app: FastAPI, client: AsyncClient) -> None:
+
+        license_settings = {"iourc_content": "[license]\ngns3vm = 1234567890abcdef;", "license_check": False}
+        response = await client.put(app.url_path_for("update_iou_license"), json=license_settings)
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json() == license_settings
diff --git a/tests/api/routes/controller/test_projects.py b/tests/api/routes/controller/test_projects.py
index 4f00b2f98..71e2e37be 100644
--- a/tests/api/routes/controller/test_projects.py
+++ b/tests/api/routes/controller/test_projects.py
@@ -216,7 +216,7 @@ class TestControllerProjectRoutes:
 
         with asyncio_patch("gns3server.controller.project.Project.open", return_value=True) as mock:
             response = await client.post(app.url_path_for("open_project", project_id=project.id))
-            assert response.status_code == status.HTTP_201_CREATED
+            assert response.status_code == status.HTTP_200_OK
             assert mock.called
 
     async def test_load_project(self, app: FastAPI, client: AsyncClient, project: Project, config) -> None:
diff --git a/tests/api/routes/controller/test_snapshots.py b/tests/api/routes/controller/test_snapshots.py
index 5e0faf1f4..73f6e1ca7 100644
--- a/tests/api/routes/controller/test_snapshots.py
+++ b/tests/api/routes/controller/test_snapshots.py
@@ -72,7 +72,7 @@ class TestSnapshotRoutes:
         response = await client.post(
             app.url_path_for("restore_snapshot", project_id=project.id, snapshot_id=snapshot.id)
         )
-        assert response.status_code == status.HTTP_201_CREATED
+        assert response.status_code == status.HTTP_200_OK
         assert response.json()["name"] == project.name
 
     async def test_create_snapshot(self, app: FastAPI, client: AsyncClient, project: Project) -> None: