1 files changed, 1 insertions, 1 deletions
diff --git a/src/ascii.c b/src/ascii.c
index eb38944..e83e4d6 100644
--- a/src/ascii.c
+++ b/src/ascii.c
@@ -113,6 +113,6 @@ OnigEncodingType OnigEncodingASCII = {
   init,
   0, /* is_initialized */
   onigenc_always_true_is_valid_mbc_string,
-  ENC_FLAG_ASCII_COMPATIBLE,
+  ENC_FLAG_ASCII_COMPATIBLE|ENC_FLAG_SKIP_OFFSET_1,
   0, 0
 };