diff --git a/Cargo.toml b/Cargo.toml
index 846edf1..8d066b9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 
 name = "grust"
-version = "0.1.2"
+version = "0.1.3-dev"
 authors = ["Mikhail Zabaluev <mikhail.zabaluev@gmail.com>"]
 license = "LGPL-2.1+"
 readme = "README.md"
diff --git a/src/error.rs b/src/error.rs
index 8ab136c..8393b84 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -27,6 +27,7 @@ use util::escape_bytestring;
 use glib as ffi;
 use gobject;
 
+use std::any::Any;
 use std::error::Error as ErrorTrait;
 use std::ffi::CStr;
 use std::fmt;
@@ -49,7 +50,7 @@ pub enum Code<T> {
     Unknown(gint)
 }
 
-pub trait Domain : IntrospectedEnum {
+pub trait Domain : IntrospectedEnum + Any {
     fn domain() -> Quark;
 }