1 files changed, 1 insertions, 2 deletions
diff --git a/re.c b/re.c
index ec3fd70b4a..9fdbf547aa 100644
--- a/re.c
+++ b/re.c
@@ -13,6 +13,7 @@
 #include "ruby/re.h"
 #include "ruby/encoding.h"
 #include "ruby/util.h"
+#include "internal.h"
 #include "regint.h"
 #include <ctype.h>
 
@@ -314,8 +315,6 @@ rb_reg_check(VALUE re)
     }
 }
 
-int rb_str_buf_cat_escaped_char(VALUE result, unsigned int c, int unicode_p);
-
 static void
 rb_reg_expr_str(VALUE str, const char *s, long len,
 	rb_encoding *enc, rb_encoding *resenc)