diff --git a/stdlib/builtins.pyi b/stdlib/builtins.pyi
index 6eaae007b..7512cb947 100644
--- a/stdlib/builtins.pyi
+++ b/stdlib/builtins.pyi
@@ -1297,7 +1297,8 @@ class OSError(Exception):
 
 EnvironmentError = OSError
 IOError = OSError
-WindowsError = OSError
+if sys.platform == "win32":
+    WindowsError = OSError
 
 class ArithmeticError(_StandardError): ...
 class AssertionError(_StandardError): ...