diff --git a/generators/python/sdk/versions.yml b/generators/python/sdk/versions.yml
index c4b4800fdcf..862b4db122a 100644
--- a/generators/python/sdk/versions.yml
+++ b/generators/python/sdk/versions.yml
@@ -1,4 +1,11 @@
 # For unreleased changes, use unreleased.yml
+- version: 4.3.2
+  irVersion: 53
+  changelogEntry:
+    - type: fix
+      summary: |
+        The generator will now correctly default to the configured global `default_bytes_stream_chunk_size` when the `request_options` parameter is not provided.
+
 - version: 4.3.1
   irVersion: 53
   changelogEntry:
diff --git a/generators/python/src/fern_python/generators/sdk/client_generator/endpoint_response_code_writer.py b/generators/python/src/fern_python/generators/sdk/client_generator/endpoint_response_code_writer.py
index 2578fe31646..618498bf77a 100644
--- a/generators/python/src/fern_python/generators/sdk/client_generator/endpoint_response_code_writer.py
+++ b/generators/python/src/fern_python/generators/sdk/client_generator/endpoint_response_code_writer.py
@@ -239,9 +239,10 @@ def _handle_success_text(
 
     def _handle_success_file_download(self, *, writer: AST.NodeWriter) -> None:
         maybe_chunk_size_default = self._context.custom_config.default_bytes_stream_chunk_size
+        defaulted_chunk_size_default = maybe_chunk_size_default if maybe_chunk_size_default is not None else "None"
         chunk_size_variable = "_chunk_size"
         writer.write_line(
-            f'{chunk_size_variable} = request_options.get("chunk_size", {maybe_chunk_size_default if maybe_chunk_size_default is not None else "None"}) if request_options is not None else None'
+            f'{chunk_size_variable} = request_options.get("chunk_size", {defaulted_chunk_size_default}) if request_options is not None else {defaulted_chunk_size_default}'
         )
         if self._is_async:
             writer.write("async ")
diff --git a/seed/python-sdk/file-download/default-chunk-size/src/seed/service/client.py b/seed/python-sdk/file-download/default-chunk-size/src/seed/service/client.py
index 5828e271585..6240d818cca 100644
--- a/seed/python-sdk/file-download/default-chunk-size/src/seed/service/client.py
+++ b/seed/python-sdk/file-download/default-chunk-size/src/seed/service/client.py
@@ -29,7 +29,7 @@ def download_file(self, *, request_options: typing.Optional[RequestOptions] = No
         ) as _response:
             try:
                 if 200 <= _response.status_code < 300:
-                    _chunk_size = request_options.get("chunk_size", 1024) if request_options is not None else None
+                    _chunk_size = request_options.get("chunk_size", 1024) if request_options is not None else 1024
                     for _chunk in _response.iter_bytes(chunk_size=_chunk_size):
                         yield _chunk
                     return
@@ -63,7 +63,7 @@ async def download_file(
         ) as _response:
             try:
                 if 200 <= _response.status_code < 300:
-                    _chunk_size = request_options.get("chunk_size", 1024) if request_options is not None else None
+                    _chunk_size = request_options.get("chunk_size", 1024) if request_options is not None else 1024
                     async for _chunk in _response.aiter_bytes(chunk_size=_chunk_size):
                         yield _chunk
                     return