diff --git a/rwx/os/__init__.py b/rwx/os/__init__.py
index d13857c..1594cbb 100644
--- a/rwx/os/__init__.py
+++ b/rwx/os/__init__.py
@@ -2,16 +2,16 @@
 
 from __future__ import annotations
 
+from abc import ABC, abstractmethod
 from typing import TYPE_CHECKING
 
-from rwx.err import Error
 from rwx.os.debian import Debian
 
 if TYPE_CHECKING:
     from pathlib import Path
 
 
-class OS:
+class OS(ABC):
     """Operating System."""
 
     def __init__(self, path: Path) -> None:
@@ -19,9 +19,9 @@ class OS:
         self.root = path
         self.name = self.get_name()
 
+    @abstractmethod
     def get_name(self) -> str:
         """Return mandatory name."""
-        raise Error
 
     @staticmethod
     def from_path(path: Path) -> OS: