1 files changed, 4 insertions, 0 deletions
diff --git a/enc/utf_8.c b/enc/utf_8.c
index cdf2510d84..ae7c98469d 100644
--- a/enc/utf_8.c
+++ b/enc/utf_8.c
@@ -431,7 +431,11 @@ OnigEncodingDefine(utf_8, UTF_8) = {
   get_ctype_code_range,
   left_adjust_char_head,
   onigenc_always_true_is_allowed_reverse_match,
+#ifdef USE_CASE_MAP_API
   onigenc_unicode_case_map,
+#else
+  NULL,
+#endif
   ENCINDEX_UTF_8,
   ONIGENC_FLAG_UNICODE,
 };