diff --git a/tfw/components/ide/file_manager/file_manager.py b/tfw/components/ide/file_manager/file_manager.py
index e416cb9..994e57a 100644
--- a/tfw/components/ide/file_manager/file_manager.py
+++ b/tfw/components/ide/file_manager/file_manager.py
@@ -7,7 +7,7 @@ from os.path import dirname, isdir, isfile, realpath
 def _with_is_allowed(func):
     @wraps(func)
     def wrapper(self, *args, **kwargs):
-        if self._is_allowed(args[0]): # pylint: disable=protected-access
+        if self.is_allowed(args[0]): # pylint: disable=protected-access
             return func(self, *args, **kwargs)
         raise ValueError('Forbidden path.')
     return wrapper
@@ -23,7 +23,7 @@ class FileManager: # pylint: disable=too-many-instance-attributes
             path
             for pattern in self.patterns
             for path in glob(pattern, recursive=True)
-            if isfile(path) and self._is_allowed(path)
+            if isfile(path) and self.is_allowed(path)
         ))
 
     @property
@@ -39,7 +39,7 @@ class FileManager: # pylint: disable=too-many-instance-attributes
             pattern = dirname(pattern)
         return pattern
 
-    def _is_allowed(self, filepath):
+    def is_allowed(self, filepath):
         return any(
             fnmatchcase(realpath(filepath), pattern)
             for pattern in self.patterns