diff --git a/app-sdk/src/comm.rs b/app-sdk/src/comm.rs
index 23bdac8..c1bc25a 100644
--- a/app-sdk/src/comm.rs
+++ b/app-sdk/src/comm.rs
@@ -18,7 +18,7 @@
 //! a static mutable buffer for chunk reuse.
 
 use crate::{xrecv_to, xsend};
-use alloc::vec::Vec;
+use alloc::{vec, vec::Vec};
 use core::cmp::min;
 use core::convert::TryInto;