diff --git a/src/regsyntax.c b/src/regsyntax.c
index ae160a57..63894ade 100644
--- a/src/regsyntax.c
+++ b/src/regsyntax.c
@@ -230,7 +230,8 @@ OnigSyntaxType OnigSyntaxPerl_NG = {
       ONIG_SYN_OP2_QMARK_PERL_SUBEXP_CALL )
   , ( SYN_GNU_REGEX_BV | ONIG_SYN_ISOLATED_OPTION_CONTINUE_BRANCH |
       ONIG_SYN_CAPTURE_ONLY_NAMED_GROUP |
-      ONIG_SYN_ALLOW_MULTIPLEX_DEFINITION_NAME )
+      ONIG_SYN_ALLOW_MULTIPLEX_DEFINITION_NAME |
+      ONIG_SYN_ALLOW_CHAR_TYPE_FOLLOWED_BY_MINUS_IN_CC )
   , ONIG_OPTION_SINGLELINE
   ,
   {