diff --git a/src/model/mod.rs b/src/model/mod.rs
index f31cdd3..825575e 100644
--- a/src/model/mod.rs
+++ b/src/model/mod.rs
@@ -5,6 +5,9 @@ use crate::gtk::glib;
 
 use glib::Object;
 
+pub type Result<T> = core::result::Result<T, Error>;
+pub type Error = std::boxed::Box<dyn std::error::Error>;
+
 glib::wrapper! {
     pub struct Frequency(ObjectSubclass<models::Frequency>);
 }