diff --git a/stdlib/3/itertools.pyi b/stdlib/3/itertools.pyi
index 8ca88cf92..443244a56 100644
--- a/stdlib/3/itertools.pyi
+++ b/stdlib/3/itertools.pyi
@@ -96,7 +96,7 @@ def product(iter1: Iterable[Any],
             iter7: Iterable[Any],
             *iterables: Iterable[Any]) -> Iterator[Tuple[Any, ...]]: ...
 @overload
-def product(*iterables: Iterable[Any], repeat: int) -> Iterator[Tuple[Any, ...]]: ...
+def product(*iterables: Iterable[Any], repeat: int = ...) -> Iterator[Tuple[Any, ...]]: ...
 
 def permutations(iterable: Iterable[_T],
                  r: Optional[int] = ...) -> Iterator[Tuple[_T, ...]]: ...