diff --git a/pallets/xvm/src/lib.rs b/pallets/xvm/src/lib.rs
index 248479d5ec..72705a2325 100644
--- a/pallets/xvm/src/lib.rs
+++ b/pallets/xvm/src/lib.rs
@@ -43,6 +43,8 @@ use astar_primitives::ethereum_checked::{
 
 pub use pallet::*;
 
+// TODO: move types and traits to `astar-primitives`.
+
 /// XVM call info on success.
 #[derive(PartialEq, Eq, Clone, Encode, Decode, RuntimeDebug, TypeInfo)]
 pub struct CallInfo {