1 files changed, 1 insertions, 1 deletions

diff --git a/re.c b/re.c
index 8052189e08..67dbc87b5c 100644
--- a/re.c
+++ b/re.c
@@ -184,7 +184,7 @@ kcode_reset_option()
 
 int
 rb_mbclen2(c, re)
-    unsigned char c;
+    unsigned int c;
     VALUE re;
 {
     int len;