diff --git a/Lib/uuid.py b/Lib/uuid.py
index 470bc0d68597ab..d4e486da15a8d7 100644
--- a/Lib/uuid.py
+++ b/Lib/uuid.py
@@ -53,8 +53,11 @@
 __author__ = 'Ka-Ping Yee <ping@zesty.ca>'
 
 # The recognized platforms - known behaviors
-if sys.platform in ('win32', 'darwin', 'emscripten', 'wasi'):
+if sys.platform in {'win32', 'darwin', 'emscripten', 'wasi'}:
     _AIX = _LINUX = False
+elif sys.platform == 'linux':
+    _LINUX = True
+    _AIX = False
 else:
     import platform
     _platform_system = platform.system()