diff --git a/src/hb-iter.hh b/src/hb-iter.hh
index 87a86b8e4..475c317de 100644
--- a/src/hb-iter.hh
+++ b/src/hb-iter.hh
@@ -179,14 +179,10 @@ struct hb_is_iterable { enum { value = _hb_is_iterable<T, hb_true_t>::value }; }
  * As such, just check for member is_iter being there. */
 template<typename Iter = void, typename Item = void> char
 _hb_is_iterator (...) {};
-template<typename Iter, typename Item> int
-_hb_is_iterator (hb_iter_t<Iter, Item> *) {};
-template<typename Iter, typename Item> int
-_hb_is_iterator (hb_iter_t<Iter, const Item> *) {};
-template<typename Iter, typename Item> int
-_hb_is_iterator (hb_iter_t<Iter, Item&> *) {};
-template<typename Iter, typename Item> int
-_hb_is_iterator (hb_iter_t<Iter, const Item&> *) {};
+template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, Item> *) {};
+template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, const Item> *) {};
+template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, Item&> *) {};
+template<typename Iter, typename Item> int _hb_is_iterator (hb_iter_t<Iter, const Item&> *) {};
 static_assert (sizeof (char) != sizeof (int), "");
 
 template<typename Iter, typename Item>