diff --git a/src/allotropy/parsers/agilent_openlab_cds/agilent_openlab_cds_decoder.py b/src/allotropy/parsers/agilent_openlab_cds/agilent_openlab_cds_decoder.py
index 5246325c0..b1511a046 100644
--- a/src/allotropy/parsers/agilent_openlab_cds/agilent_openlab_cds_decoder.py
+++ b/src/allotropy/parsers/agilent_openlab_cds/agilent_openlab_cds_decoder.py
@@ -273,7 +273,7 @@ def _get_matching_filenames(zip_ref: zipfile.ZipFile, pattern: str) -> list[str]
     ]
 
 
-def decode_data(input_path: str) -> dict[str, Any]:
+def decode_data(input_bytes: IO[bytes]) -> dict[str, Any]:
     """
     decoded the files in input folder path and returns a structured data
     :param input_path: input folder path
@@ -284,7 +284,7 @@ def decode_data(input_path: str) -> dict[str, Any]:
     total_injection_chromatogram_details: list[dict[str, Any]] = []
     total_peak_details: list[dict[str, Any]] = []
 
-    with zipfile.ZipFile(input_path, "r") as zip_ref:
+    with zipfile.ZipFile(input_bytes) as zip_ref:
         acaml_path = next(iter(_get_matching_filenames(zip_ref, ".*acaml")))
         with zip_ref.open(acaml_path) as acaml_file_data:
             acaml_file_content = acaml_file_data.read().decode("utf-8-sig")
diff --git a/src/allotropy/parsers/agilent_openlab_cds/agilent_openlab_cds_parser.py b/src/allotropy/parsers/agilent_openlab_cds/agilent_openlab_cds_parser.py
index f4e7bdb46..fbc64a6d7 100644
--- a/src/allotropy/parsers/agilent_openlab_cds/agilent_openlab_cds_parser.py
+++ b/src/allotropy/parsers/agilent_openlab_cds/agilent_openlab_cds_parser.py
@@ -26,7 +26,7 @@ class AgilentOpenLabCDSParser(VendorParser[Data, Model]):
     SCHEMA_MAPPER = Mapper
 
     def create_data(self, named_file_contents: NamedFileContents) -> Data:
-        structured_data = decode_data(named_file_contents.original_file_path)
+        structured_data = decode_data(named_file_contents.get_bytes_stream())
         return Data(
             metadata=create_metadata(structured_data, named_file_contents),
             measurement_groups=[create_measurement_groups(structured_data)],