diff --git a/oxrlib/cache.py b/oxrlib/cache.py
index 6792c3cf0649acfeccc08d83df6b157d5c3e5467..8feb30398b6805804fbd828ba52a47d026ba9d34 100644
--- a/oxrlib/cache.py
+++ b/oxrlib/cache.py
@@ -6,7 +6,10 @@ from . import errors
 class CacheFileBase:
     def __init__(self, path, *args, **kwargs):
         self.path = path
-        self.open = functools.partial(path.open, *args, **kwargs)
+        try:
+            self.open_file = path.open(*args, **kwargs)
+        except OSError as error:
+            self._translate_error(error, 'init')
 
     def _translate_error(self, error, when):
         for orig_type, mapped_type in self.ERRORS_MAP:
@@ -15,12 +18,7 @@ class CacheFileBase:
         raise error
 
     def __enter__(self):
-        try:
-            self.open_file = self.open()
-        except OSError as error:
-            self._translate_error(error, 'enter')
-        else:
-            return self.open_file
+        return self.open_file
 
     def __exit__(self, exc_type, exc_value, exc_tb):
         try: