diff --git a/substrate/srml/elections/src/lib.rs b/substrate/srml/elections/src/lib.rs
index 0f2bf3df12..9960ef22b7 100644
--- a/substrate/srml/elections/src/lib.rs
+++ b/substrate/srml/elections/src/lib.rs
@@ -300,6 +300,11 @@ decl_module! {
 		/// approval voting). A reasonable default value is 24.
 		const DecayRatio: u32 = T::DecayRatio::get();
 
+		/// The chunk size of the voter vector.
+		const VOTER_SET_SIZE: u32 = VOTER_SET_SIZE as u32;
+		/// The chunk size of the approval vector.
+		const APPROVAL_SET_SIZE: u32 = APPROVAL_SET_SIZE as u32;
+
 		fn deposit_event<T>() = default;
 
 		/// Set candidate approvals. Approval slots stay valid as long as candidates in those slots