diff --git a/src/hb-iter.hh b/src/hb-iter.hh
index 57a687af49b6d8dcd8d1047f9263830e35bbc0ec..b9823107063c40273422d2fefa2e162b5026cc57 100644
--- a/src/hb-iter.hh
+++ b/src/hb-iter.hh
@@ -69,6 +69,7 @@ struct hb_iter_t
 
   /* Operators. */
   iter_t iter () const { return *thiz(); }
+  iter_t operator + () const { return *thiz(); }
   explicit_operator bool () const { return thiz()->__more__ (); }
   unsigned len () const { return thiz()->__len__ (); }
   hb_remove_reference (item_t)* operator -> () const { return hb_addressof (**thiz()); }
diff --git a/src/test-iter.cc b/src/test-iter.cc
index 97a739cd2f23fd794d1661ac62b3efff954c7566..ef35434983e02b3f206fec2145b896f4532d0ca8 100644
--- a/src/test-iter.cc
+++ b/src/test-iter.cc
@@ -135,7 +135,7 @@ main (int argc, char **argv)
   hb_array_t<hb_vector_t<int> > pa;
   pa->as_array ();
 
-  s
+  + s
   | hb_map (hb_identity)
   | hb_filter ()
   | hb_filter (hb_bool)