diff --git a/pep-0663.txt b/pep-0663.txt
index 6cc3efd29..a272dbe64 100644
--- a/pep-0663.txt
+++ b/pep-0663.txt
@@ -176,7 +176,7 @@ to arguments for changing Enum's ``repr()`` to match Flag's.
 Backwards Compatibility
 =======================
 
-Backwards compatibility of stringified objects is not guarenteed across major
+Backwards compatibility of stringified objects is not guaranteed across major
 Python versions, and there will be backwards compatibility breaks where
 software uses the ``repr()``, ``str()``, and ``format()`` output of enums in
 tests, documentation, data structures, and/or code generation.