diff --git a/src/runtime2/tests/mod.rs b/src/runtime2/tests/mod.rs
index 79417ff2af586b2530f86f6610348643eea104e5..eec0105e5de7429babadd59ae496d33561481aa1 100644
--- a/src/runtime2/tests/mod.rs
+++ b/src/runtime2/tests/mod.rs
@@ -1,5 +1,3 @@
-use std::sync::Arc;
-
 use super::*;
 use crate::{PortId, ProtocolDescription};
 use crate::common::Id;