1 files changed, 1 insertions, 1 deletions
diff --git a/regint.h b/regint.h
index 660e97542c..c597fff6c9 100644
--- a/regint.h
+++ b/regint.h
@@ -802,7 +802,7 @@ extern void onig_print_statistics P_((FILE* f));
 extern UChar* onig_error_code_to_format P_((int code));
 extern void  onig_snprintf_with_pattern PV_((UChar buf[], int bufsize, OnigEncoding enc, UChar* pat, UChar* pat_end, const UChar *fmt, ...));
 extern int  onig_bbuf_init P_((BBuf* buf, int size));
-extern int  onig_alloc_init P_((regex_t** reg, OnigOptionType option, OnigCaseFoldType case_fold_flag, OnigEncoding enc, OnigSyntaxType* syntax));
+extern int  onig_alloc_init P_((regex_t** reg, OnigOptionType option, OnigCaseFoldType case_fold_flag, OnigEncoding enc, const OnigSyntaxType* syntax));
 extern int  onig_compile P_((regex_t* reg, const UChar* pattern, const UChar* pattern_end, OnigErrorInfo* einfo));
 extern void onig_chain_reduce P_((regex_t* reg));
 extern void onig_chain_link_add P_((regex_t* to, regex_t* add));