diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 5cd5f17..d0d4d8a 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,12 @@
 Change log
 ================================================================================
 
+0.6.7 - unreleased
+--------------------------------------------------------------------------------
+
+#. `#115 <https://github.com/pyexcel/pyexcel-io/issues/115>`_: Pathnames with
+   "." cause file_name error in get_writer.
+
 0.6.6 - 31.1.2022
 --------------------------------------------------------------------------------
 
diff --git a/pyexcel_io/writers/csv_sheet.py b/pyexcel_io/writers/csv_sheet.py
index 422dbed..d2a2db0 100644
--- a/pyexcel_io/writers/csv_sheet.py
+++ b/pyexcel_io/writers/csv_sheet.py
@@ -47,7 +47,7 @@ def __init__(
 
     def get_writer(self):
         if self._sheet_name != constants.DEFAULT_SHEET_NAME:
-            names = self._native_book.split(".")
+            names = self._native_book.rsplit(".", 1)
             file_name = "%s%s%s%s%s.%s" % (
                 names[0],
                 constants.DEFAULT_MULTI_CSV_SEPARATOR,