1 files changed, 2 insertions, 1 deletions
diff --git a/src/koi8.c b/src/koi8.c
index 8531825..9fb2ee5 100644
--- a/src/koi8.c
+++ b/src/koi8.c
@@ -250,5 +250,6 @@ OnigEncodingType OnigEncodingKOI8 = {
   NULL, /* init */
   NULL, /* is_initialized */
   onigenc_always_true_is_valid_mbc_string,
-  0, 0, 0
+  ENC_FLAG_ASCII_COMPATIBLE,
+  0, 0
 };