diff --git a/m-rbtree.h b/m-rbtree.h
index 1029aa7a..fc08774e 100644
--- a/m-rbtree.h
+++ b/m-rbtree.h
@@ -74,7 +74,7 @@
 #define M_RBTR33_OPLIST_P3(name, oplist)                                      \
   (INIT(M_C(name, _init)),                                                    \
    INIT_SET(M_C(name, _init_set)),                                            \
-   INIT_WITH(API_1(M_INIT_VAI)),                                              \
+   INIT_WITH(API_1(M_INIT_EMPLACE_VAI)),                                      \
    SET(M_C(name, _set)),                                                      \
    CLEAR(M_C(name, _clear)),                                                  \
    INIT_MOVE(M_C(name, _init_move)),                                          \