diff --git a/docs/overview.md b/docs/overview.md
index b2c83f10..0f53a851 100644
--- a/docs/overview.md
+++ b/docs/overview.md
@@ -251,7 +251,7 @@ Required members for _Token_:
- _token_.stop_possible() const noexcept -> bool
- std::copyable<_Token_>
- std::equality_comparable<_Token_>
-- std::swapable<_Token_>
+- std::swappable<_Token_>
Example: concept use