diff --git a/src/hb-algs.hh b/src/hb-algs.hh
index cc37c073d..fe94ee357 100644
--- a/src/hb-algs.hh
+++ b/src/hb-algs.hh
@@ -236,17 +236,6 @@ struct
   template <typename T> constexpr auto
   impl (const T& v, hb_priority<1>) const HB_RETURN (uint32_t, hb_deref (v).hash ())
 
-  template <typename T> constexpr uint32_t
-  impl (const hb::shared_ptr<T>& v, hb_priority<1>) const
-  {
-    return v.get () ? v.get ()->hash () : 0;
-  }
-  template <typename T> constexpr uint32_t
-  impl (const hb::unique_ptr<T>& v, hb_priority<1>) const
-  {
-    return v.get () ? v.get ()->hash () : 0;
-  }
-
   template <typename T> constexpr auto
   impl (const T& v, hb_priority<0>) const HB_RETURN (uint32_t, std::hash<hb_decay<decltype (hb_deref (v))>>{} (hb_deref (v)))