1 files changed, 1 insertions, 0 deletions
diff --git a/string.c b/string.c
index 7d865d669a..e16b4291d8 100644
--- a/string.c
+++ b/string.c
@@ -726,6 +726,7 @@ static VALUE
 str_new_empty(VALUE str)
 {
     VALUE v = rb_str_new5(str, 0, 0);
+    rb_enc_copy(v, str);
     OBJ_INFECT(v, str);
     return v;
 }