diff --git a/array.c b/array.c
index 07b3df0861..2876548085 100644
--- a/array.c
+++ b/array.c
@@ -996,6 +996,12 @@ rb_check_to_array(VALUE ary)
     return rb_check_convert_type_with_id(ary, T_ARRAY, "Array", idTo_a);
 }
 
+VALUE
+rb_to_array(VALUE ary)
+{
+    return rb_convert_type_with_id(ary, T_ARRAY, "Array", idTo_a);
+}
+
 /*
  *  call-seq:
  *    Array.try_convert(object) -> object, new_array, or nil
diff --git a/internal/array.h b/internal/array.h
index 44c0efbbc1..00e03c116e 100644
--- a/internal/array.h
+++ b/internal/array.h
@@ -29,6 +29,7 @@ VALUE rb_ary_tmp_new_fill(long capa);
 VALUE rb_ary_at(VALUE, VALUE);
 size_t rb_ary_memsize(VALUE);
 VALUE rb_to_array_type(VALUE obj);
+VALUE rb_to_array(VALUE obj);
 void rb_ary_cancel_sharing(VALUE ary);
 
 static inline VALUE rb_ary_entry_internal(VALUE ary, long offset);