diff --git a/src/hb-object-private.hh b/src/hb-object-private.hh
index 66a35df05..472554882 100644
--- a/src/hb-object-private.hh
+++ b/src/hb-object-private.hh
@@ -42,7 +42,6 @@
  * Lockable set
  */
 
-#define HB_LOCKABLE_SET_INIT {HB_VECTOR_INIT}
 template <typename item_t, typename lock_t>
 struct hb_lockable_set_t
 {
diff --git a/src/hb-vector-private.hh b/src/hb-vector-private.hh
index 157fbd51b..1ef20d438 100644
--- a/src/hb-vector-private.hh
+++ b/src/hb-vector-private.hh
@@ -31,7 +31,6 @@
 #include "hb-private.hh"
 
 
-#define HB_VECTOR_INIT {0, 0, false, nullptr}
 template <typename Type, unsigned int StaticSize=8>
 struct hb_vector_t
 {