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-rw-r--r--encoding.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/encoding.c b/encoding.c
index d130eb2612..10a0ab0371 100644
--- a/encoding.c
+++ b/encoding.c
@@ -803,7 +803,7 @@ rb_enc_get_index(VALUE obj)
if (NIL_P(tmp)) {
tmp = rb_funcallv(obj, rb_intern("external_encoding"), 0, 0);
}
- if (is_data_encoding(tmp)) {
+ if (is_obj_encoding(tmp)) {
i = enc_check_encoding(tmp);
}
break;