1 files changed, 3 insertions, 0 deletions
diff --git a/enc/gbk.c b/enc/gbk.c
index 7be60a0de9..cead9b1dfc 100644
--- a/enc/gbk.c
+++ b/enc/gbk.c
@@ -213,6 +213,9 @@ OnigEncodingDefine(gbk, GBK) = {
   gbk_is_allowed_reverse_match,
   0,
   ONIGENC_FLAG_NONE,
+#ifdef ONIG_CASE_MAPPING
+  onigenc_not_support_case_map,
+#endif   /* ONIG_CASE_MAPPING */
 };
 /*
  * Name: GBK