diff --git a/ChangeLog b/ChangeLog
index ef4f807d03..b13583deb1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Dec  4 14:34:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ruby.c (process_options): reverted c flag.
+
 Tue Dec  4 11:23:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* bignum.c (rb_cstr_to_inum): trailing spaces may exist at sqeezing
diff --git a/ruby.c b/ruby.c
index 05c559a5e5..72602db016 100644
--- a/ruby.c
+++ b/ruby.c
@@ -1018,6 +1018,11 @@ process_options(VALUE arg)
 	FL_UNSET(rb_load_path, FL_TAINT);
     }
 
+    if (opt->do_check) {
+	printf("Syntax OK\n");
+	return Qtrue;
+    }
+
     if (tree) {
 	if (opt->do_print) {
 	    tree = rb_parser_append_print(parser, tree);