diff --git a/frame/session/src/lib.rs b/frame/session/src/lib.rs
index 22bd5c55d0f6b..89f182b769a69 100644
--- a/frame/session/src/lib.rs
+++ b/frame/session/src/lib.rs
@@ -141,12 +141,7 @@ use sp_std::{
 
 pub use pallet::*;
 pub use weights::WeightInfo;
-
-/// Decides whether the session should be ended.
-pub trait ShouldEndSession<BlockNumber> {
-	/// Return `true` if the session should be ended.
-	fn should_end_session(now: BlockNumber) -> bool;
-}
+pub use sp_session::ShouldEndSession;
 
 /// Ends the session after a fixed period of blocks.
 ///
diff --git a/primitives/session/src/lib.rs b/primitives/session/src/lib.rs
index 339e0656ce582..38213d4a6ca9e 100644
--- a/primitives/session/src/lib.rs
+++ b/primitives/session/src/lib.rs
@@ -53,6 +53,12 @@ sp_api::decl_runtime_apis! {
 /// Number of validators in a given session.
 pub type ValidatorCount = u32;
 
+/// Decides whether the session should be ended.
+pub trait ShouldEndSession<BlockNumber> {
+	/// Return `true` if the session should be ended.
+	fn should_end_session(now: BlockNumber) -> bool;
+}
+
 /// Proof of membership of a specific key in a given session.
 #[derive(Encode, Decode, Clone, Eq, PartialEq, Default, RuntimeDebug, scale_info::TypeInfo)]
 pub struct MembershipProof {