diff --git a/api/__init__.py b/api/__init__.py
index e25e0ac..e179134 100644
--- a/api/__init__.py
+++ b/api/__init__.py
@@ -2,7 +2,7 @@ from .project import list_project, have_project, create_project, delete_project
 from .project import is_project_open, get_project_open_count, open_project, close_project
 from .project import copy_project
 
-from .old_parser import read_inp
+from .api_parser import read_inp
 
 from .operation import API_ADD, API_UPDATE, API_DELETE
 from .operation import ChangeSet
diff --git a/api/old_parser.py b/api/api_parser.py
similarity index 100%
rename from api/old_parser.py
rename to api/api_parser.py
diff --git a/api/parser.py b/api/parser.py
deleted file mode 100644
index e69de29..0000000