diff --git a/include/ruby/internal/core/rarray.h b/include/ruby/internal/core/rarray.h
index ea37c8dfad..c3bb40be25 100644
--- a/include/ruby/internal/core/rarray.h
+++ b/include/ruby/internal/core/rarray.h
@@ -482,14 +482,6 @@ rb_array_ptr_use_end(VALUE a,
     rb_array_ptr_use_end(rbimpl_ary, (flag));                \
 } while (0)
 
-/**
- * @private
- *
- * This is an  implementation detail of #RARRAY_PTR_USE.  People do  not use it
- * directly.
- */
-#define RARRAY_PTR_USE_START(a) rb_array_ptr_use_start(a, 0)
-
 /**
  * @private
  *
@@ -526,22 +518,6 @@ rb_array_ptr_use_end(VALUE a,
 #define RARRAY_PTR_USE(ary, ptr_name, expr)     \
     RBIMPL_RARRAY_STMT(0, ary, ptr_name, expr)
 
-/**
- * @private
- *
- * This is  an implementation  detail of #RARRAY_PTR_USE_TRANSIENT.   People do
- * not use it directly.
- */
-#define RARRAY_PTR_USE_START_TRANSIENT(a) rb_array_ptr_use_start(a, 1)
-
-/**
- * @private
- *
- * This is  an implementation  detail of #RARRAY_PTR_USE_TRANSIENT.   People do
- * not use it directly.
- */
-#define RARRAY_PTR_USE_END_TRANSIENT(a) rb_array_ptr_use_end(a, 1)
-
 /**
  * Identical to #RARRAY_PTR_USE, except the pointer can be a transient one.
  *