diff --git a/osaca/frontend.py b/osaca/frontend.py
index 3ee41a2..357437a 100755
--- a/osaca/frontend.py
+++ b/osaca/frontend.py
@@ -28,7 +28,7 @@ class Frontend(object):
                 )
         elif path_to_yaml:
             try:
-                assert os.path.exists(self._path)
+                assert os.path.exists(path_to_yaml)
                 with open(path_to_yaml, 'r') as f:
                     self._data = yaml.load(f, Loader=yaml.Loader)
             except (AssertionError, FileNotFoundError):