diff --git a/ChangeLog b/ChangeLog
index e1bf1367b4..efd21d93ad 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Jun  6 20:23:46 2007  Koichi Sasada  <ko1@atdot.net>
+
+	* insns.def (invokeblock): fix of splat argument.
+	  (splat same as normal method dispatch)
+
 Wed Jun  6 16:27:25 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* insns.def: fixed indentation.
diff --git a/insns.def b/insns.def
index 1ad6490f15..02ffe11673 100644
--- a/insns.def
+++ b/insns.def
@@ -1328,7 +1328,9 @@ invokeblock
     if (BUILTIN_TYPE(iseq) != T_NODE) {
 	if (flag & VM_CALL_ARGS_SPLAT_BIT) {
 	    VALUE ary = TOPN(0);
-	    if (CLASS_OF(ary) != rb_cArray) {
+	    ary = rb_check_convert_type(ary, T_ARRAY, "Array", "to_splat");
+
+	    if (NIL_P(ary)) {
 		/* not a [BUG] */
 	    }
 	    else {