diff --git a/src/hb-algs.hh b/src/hb-algs.hh
index c2e99c1fc..bbe097fe0 100644
--- a/src/hb-algs.hh
+++ b/src/hb-algs.hh
@@ -1190,12 +1190,6 @@ struct
 }
 HB_FUNCOBJ (hb_bitwise_gt); // aka sub
 struct
-{ HB_PARTIALIZE(2);
-  template <typename T> constexpr auto
-  operator () (const T &a, const T &b) const HB_AUTO_RETURN (~a & ~b)
-}
-HB_FUNCOBJ (hb_bitwise_non);
-struct
 { HB_PARTIALIZE(2);
   template <typename T> constexpr auto
   operator () (const T &a, const T &b) const HB_AUTO_RETURN (~a | b)