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-rw-r--r--ext/stringio/stringio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c
index 7dfd8e6bd5..5f824e3f58 100644
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@@ -903,7 +903,7 @@ Init_stringio()
rb_define_alloc_func(StringIO, strio_s_allocate);
rb_define_singleton_method(StringIO, "open", strio_s_open, -1);
rb_define_method(StringIO, "initialize", strio_initialize, -1);
- rb_define_method(StringIO, "copy_object", strio_copy, 1);
+ rb_define_method(StringIO, "initialize_copy", strio_copy, 1);
rb_define_method(StringIO, "reopen", strio_reopen, -1);
rb_define_method(StringIO, "string", strio_get_string, 0);