1 files changed, 3 insertions, 3 deletions
diff --git a/error.c b/error.c
index c316e88d9c..a0346a4c6b 100644
--- a/error.c
+++ b/error.c
@@ -393,12 +393,12 @@ exception(argc, argv)
     }
     for (i=0; i<argc; i++) {	/* argument check */
 	id = rb_to_id(argv[i]);
-	if (!rb_is_const_id(id)) {
-	    ArgError("identifier `%s' needs to be constant", rb_id2name(id));
-	}
 	if (!rb_id2name(id)) {
 	    ArgError("argument needs to be symbol or string");
 	}
+	if (!rb_is_const_id(id)) {
+	    ArgError("identifier `%s' needs to be constant", rb_id2name(id));
+	}
     }
     for (i=0; i<argc; i++) {
 	v = rb_define_class_under(the_class,