diff --git a/src/hb-set.hh b/src/hb-set.hh
index 38bd9c221..b6e2086a2 100644
--- a/src/hb-set.hh
+++ b/src/hb-set.hh
@@ -450,7 +450,10 @@ struct hb_set_t
   bool operator () (hb_codepoint_t k) const { return has (k); }
 
   /* Sink interface. */
-  hb_set_t& operator << (hb_codepoint_t v) { add (v); return *this; }
+  hb_set_t& operator << (hb_codepoint_t v)
+  { add (v); return *this; }
+  hb_set_t& operator << (const hb_pair_t<hb_codepoint_t, hb_codepoint_t>& range)
+  { add_range (range.first, range.second); return *this; }
 
   bool intersects (hb_codepoint_t first, hb_codepoint_t last) const
   {