diff --git a/scrapy_poet/page_input_providers.py b/scrapy_poet/page_input_providers.py
index dd40f952..c7ae8002 100644
--- a/scrapy_poet/page_input_providers.py
+++ b/scrapy_poet/page_input_providers.py
@@ -193,7 +193,7 @@ def deserialize(self, data: Any) -> Sequence[Any]:
                 response_data["url"],
                 response_data["body"],
                 status=response_data["status"],
-                headers=HttpResponseHeaders.from_bytes_dict(response_data["headers"]),
+                headers=response_data["headers"],
                 encoding=response_data["_encoding"],
             )
             for response_data in data