diff --git a/samples/client/echo_api/python-pydantic-v1/openapi_client/api_client.py b/samples/client/echo_api/python-pydantic-v1/openapi_client/api_client.py
index 4ae7c7efde3..cceab3d92f7 100644
--- a/samples/client/echo_api/python-pydantic-v1/openapi_client/api_client.py
+++ b/samples/client/echo_api/python-pydantic-v1/openapi_client/api_client.py
@@ -509,7 +509,7 @@ class ApiClient:
             if k in collection_formats:
                 collection_format = collection_formats[k]
                 if collection_format == 'multi':
-                    new_params.extend((k, quote(value)) for value in v)
+                    new_params.extend((k, value) for value in v)
                 else:
                     if collection_format == 'ssv':
                         delimiter = ' '
diff --git a/samples/openapi3/client/petstore/python-pydantic-v1/petstore_api/api_client.py b/samples/openapi3/client/petstore/python-pydantic-v1/petstore_api/api_client.py
index 61c153fd31c..151d023104e 100644
--- a/samples/openapi3/client/petstore/python-pydantic-v1/petstore_api/api_client.py
+++ b/samples/openapi3/client/petstore/python-pydantic-v1/petstore_api/api_client.py
@@ -545,7 +545,7 @@ class ApiClient:
             if k in collection_formats:
                 collection_format = collection_formats[k]
                 if collection_format == 'multi':
-                    new_params.extend((k, str(value)) for value in v)
+                    new_params.extend((k, quote(str(value))) for value in v)
                 else:
                     if collection_format == 'ssv':
                         delimiter = ' '