diff --git a/conda-store-server/conda_store_server/_internal/server/views/pagination.py b/conda-store-server/conda_store_server/_internal/server/views/pagination.py
index 0f138a0c2..19b62e8bf 100644
--- a/conda-store-server/conda_store_server/_internal/server/views/pagination.py
+++ b/conda-store-server/conda_store_server/_internal/server/views/pagination.py
@@ -2,7 +2,7 @@
 
 import base64
 import operator
-from typing import Any
+from typing import Any, Optional
 
 import pydantic
 from fastapi import HTTPException
@@ -159,7 +159,7 @@ def paginate(
 
 class CursorPaginatedArgs(pydantic.BaseModel):
     limit: int
-    order: str
+    order: Optional[str] = None
     sort_by: list[str]
 
     @pydantic.field_validator("sort_by")
diff --git a/conda-store-server/tests/_internal/server/views/test_api.py b/conda-store-server/tests/_internal/server/views/test_api.py
index d902a1dec..f6557dad8 100644
--- a/conda-store-server/tests/_internal/server/views/test_api.py
+++ b/conda-store-server/tests/_internal/server/views/test_api.py
@@ -1158,3 +1158,22 @@ def test_api_list_environments_by_namespace_name(
     )
     assert [env.name for env in sorted_envs] == env_names
     assert [env.namespace.name for env in sorted_envs] == namespace_names
+
+
+def test_api_list_environments_no_qparam(
+    conda_store_server,
+    testclient,
+    seed_conda_store_big,
+    authenticate,
+):
+    """Test the REST API lists the paginated envs when sorting by namespace."""
+    response = testclient.get("api/v1/environment/")
+    response.raise_for_status()
+
+    model = schema.APIListEnvironment.model_validate(response.json())
+    assert model.status == schema.APIStatus.OK
+
+    env_ids = [env.id for env in model.data]
+
+    # Check that the environments are sorted by ID
+    assert sorted(env_ids) == env_ids