diff --git a/src/test-iter.cc b/src/test-iter.cc
index 9ce8b0ca2..3de340145 100644
--- a/src/test-iter.cc
+++ b/src/test-iter.cc
@@ -91,7 +91,7 @@ test_iterator (Iter it)
 }
 
 template <typename Iterable,
-	 hb_enable_if (hb_is_iterable (Iterable))>
+	  hb_enable_if (hb_is_iterable (Iterable))>
 static void
 test_iterable (const Iterable &lst = Null(Iterable))
 {
@@ -127,6 +127,11 @@ main (int argc, char **argv)
   hb_set_t st;
   test_iterable (st);
   hb_sorted_array_t<int> sa;
+  (void) static_cast<hb_iter_t<hb_sorted_array_t<int>, hb_sorted_array_t<int>::item_t>&> (sa);
+  (void) static_cast<hb_iter_t<hb_sorted_array_t<int>, hb_sorted_array_t<int>::__item_t__>&> (sa);
+  (void) static_cast<hb_iter_t<hb_sorted_array_t<int>, int&>&>(sa);
+  (void) static_cast<hb_iter_t<hb_sorted_array_t<int>>&>(sa);
+  (void) static_cast<hb_iter_t<hb_array_t<int>, int&>&> (sa);
   test_iterable (sa);
 
   test_iterable<hb_array_t<int> > ();