diff --git a/src/tests/filter.rs b/src/tests/filter.rs
index f39be39..7ba2fb5 100644
--- a/src/tests/filter.rs
+++ b/src/tests/filter.rs
@@ -1,3 +1,4 @@
+use crate::can::CanController;
 use crate::filter::Filter;
 use crate::tests::can::Mocks;
 use embedded_can::{ExtendedId, Id, StandardId};