diff --git a/ChangeLog b/ChangeLog
index 1c0e40de46..6e2f8baf53 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Dec  9 13:23:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* vm_insnhelper.c (check_cfunc): use function pointer.
+
 Tue Dec  9 12:08:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* .gdbinit (rp): fixed typo for T_STRUCT.
diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 39b379429f..b3815b692c 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -1441,7 +1441,7 @@ vm_expandarray(rb_control_frame_t *cfp, VALUE ary, int num, int flag)
 }
 
 static inline int
-check_cfunc(const NODE *mn, const void *func)
+check_cfunc(const NODE *mn, VALUE (*func)())
 {
     if (mn && nd_type(mn->nd_body) == NODE_CFUNC &&
 	mn->nd_body->nd_cfnc == func) {