1 files changed, 1 insertions, 1 deletions
diff --git a/src/gb18030.c b/src/gb18030.c
index d4a1108..7654432 100644
--- a/src/gb18030.c
+++ b/src/gb18030.c
@@ -535,6 +535,6 @@ OnigEncodingType OnigEncodingGB18030 = {
   NULL, /* init */
   NULL, /* is_initialized */
   is_valid_mbc_string,
-  ENC_FLAG_ASCII_COMPATIBLE,
+  ENC_FLAG_ASCII_COMPATIBLE|ENC_FLAG_SKIP_OFFSET_1,
   0, 0
 };