diff --git a/cliboa/scenario/transform/file.py b/cliboa/scenario/transform/file.py
index 71a24864..0b0a1c34 100644
--- a/cliboa/scenario/transform/file.py
+++ b/cliboa/scenario/transform/file.py
@@ -136,6 +136,8 @@ def io_files(self, iterable, ext=None):
             fd, temp_file = tempfile.mkstemp()
             os.close(fd)
 
+            self._logger.info("target file is %s" % input_path)
+
             yield input_path, temp_file
 
             if input_path == output_path: