1 files changed, 2 insertions, 2 deletions
diff --git a/re.c b/re.c
index 2d7ea2c4c3..e22c8c04c2 100644
--- a/re.c
+++ b/re.c
@@ -287,7 +287,7 @@ rb_char_to_option_kcode(int c, int *option, int *kcode)
 
     switch (c) {
       case 'n':
-        *kcode = -1;
+        *kcode = rb_ascii8bit_encindex();
         return (*option = ARG_ENCODING_NONE);
       case 'e':
 	*kcode = rb_enc_find_index("EUC-JP");
@@ -296,7 +296,7 @@ rb_char_to_option_kcode(int c, int *option, int *kcode)
 	*kcode = rb_enc_find_index("Windows-31J");
 	break;
       case 'u':
-	*kcode = rb_enc_find_index("UTF-8");
+	*kcode = rb_utf8_encindex();
 	break;
       default:
 	*kcode = -1;