diff --git a/alpharaw/mzml.py b/alpharaw/mzml.py
index af113bf..7c49ded 100644
--- a/alpharaw/mzml.py
+++ b/alpharaw/mzml.py
@@ -12,7 +12,7 @@
 class MzMLReader(MSData_Base):
     """
     Load mzml file as `:class:`MSData_Base` structure.
-    This reader will be registered as "mzml" 
+    This reader will be registered as "mzml"
     in :obj:`alphraw.ms_data_base.ms_reader_provider`.
 
 
@@ -31,14 +31,14 @@ def _import(
         mzml_file_path: str,
     ) -> dict:
         """
-        Implementation of :func:`alpharaw.ms_data_base.MSData_Base._import` interface, 
+        Implementation of :func:`alpharaw.ms_data_base.MSData_Base._import` interface,
         which will be called by :func:`alpharaw.ms_data_base.MSData_Base.import_raw`,
         the main entry of :class:`alpharaw.ms_data_base.MSData_Base` sub-classes.
 
         Parameters
         ----------
         mzml_file_path : str
-            Absolute or relative path of the mzml file. 
+            Absolute or relative path of the mzml file.
             For testing purpose, this can be pyteomics `MzML` object as well.
 
         Returns
diff --git a/alpharaw/sciex.py b/alpharaw/sciex.py
index 3621819..ed1c922 100644
--- a/alpharaw/sciex.py
+++ b/alpharaw/sciex.py
@@ -8,7 +8,7 @@
 class SciexWiffData(MSData_Base):
     """
     Load Sciex Wiff data as :class:`MSData_Base` data structure.
-    This reader will be registered as "sciex", "sciex_wiff", and "sciex_raw" 
+    This reader will be registered as "sciex", "sciex_wiff", and "sciex_raw"
     in :obj:`alpharaw.ms_data_base.ms_reader_provider`.
 
     Parameters