diff --git a/codegenerator/openapi/neutron.py b/codegenerator/openapi/neutron.py
index 8739545..deb59b0 100644
--- a/codegenerator/openapi/neutron.py
+++ b/codegenerator/openapi/neutron.py
@@ -298,15 +298,25 @@ class NeutronGenerator(OpenStackServerSourceBase):
                             name="sort_key",
                             location="query",
                             description="Sort results by the attribute. This is an optional feature and may be silently ignored by the server.",
-                            type_schema=TypeSchema(type="string"),
+                            type_schema=TypeSchema(
+                                type="array", items={"type": "string"}
+                            ),
+                            style="form",
+                            explode=True,
                         ),
                         "sort_dir": ParameterSchema(
                             name="sort_dir",
                             location="query",
                             description="Sort direction. This is an optional feature and may be silently ignored by the server.",
                             type_schema=TypeSchema(
-                                type="string", enum=["asc", "desc"]
+                                type="array",
+                                items={
+                                    "type": "string",
+                                    "enum": ["asc", "desc"],
+                                },
                             ),
+                            style="form",
+                            explode=True,
                         ),
                     },
                     "schemas": {},