diff --git a/rag/app/presentation.py b/rag/app/presentation.py
index d451deb8d..148e73c26 100644
--- a/rag/app/presentation.py
+++ b/rag/app/presentation.py
@@ -135,7 +135,8 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
             sections = pdf_parser(filename, binary, from_page=from_page, to_page=to_page, callback=callback)
         elif layout_recognizer == "Plain Text":
             pdf_parser = PlainParser()
-            sections, _ = pdf_parser(filename, binary, from_page=from_page, to_page=to_page, callback=callback)
+            sections, _ = pdf_parser(filename if not binary else binary, from_page=from_page, to_page=to_page,
+                                      callback=callback)
         else:
             vision_model = LLMBundle(kwargs["tenant_id"], LLMType.IMAGE2TEXT, llm_name=layout_recognizer, lang=lang)
             pdf_parser = VisionParser(vision_model=vision_model, **kwargs)