diff --git a/polkadot/runtime/src/runtime/staking.rs b/polkadot/runtime/src/runtime/staking.rs
index 0bb4372c6d..1b69698265 100644
--- a/polkadot/runtime/src/runtime/staking.rs
+++ b/polkadot/runtime/src/runtime/staking.rs
@@ -42,6 +42,7 @@ const SESSIONS_PER_ERA: &[u8] = b"sta:spe";
 const NEXT_SESSIONS_PER_ERA: &[u8] = b"sta:nse";
 const CURRENT_ERA: &[u8] = b"sta:era";
 const LAST_ERA_LENGTH_CHANGE: &[u8] = b"sta:lec";
+const TOTAL_STAKE: &[u8] = b"sta:tot";
 const BALANCE_OF: &[u8] = b"sta:bal:";
 const BONDAGE_OF: &[u8] = b"sta:bon:";
 
@@ -235,6 +236,7 @@ mod tests {
 			twox_128(SESSIONS_PER_ERA).to_vec() => vec![].and(&2u64),
 			twox_128(VALIDATOR_COUNT).to_vec() => vec![].and(&2u32),
 			twox_128(BONDING_DURATION).to_vec() => vec![].and(&3u64),
+			twox_128(TOTAL_STAKE).to_vec() => vec![].and(&100u64),
 			twox_128(&one.to_keyed_vec(BALANCE_OF)).to_vec() => vec![].and(&10u64),
 			twox_128(&two.to_keyed_vec(BALANCE_OF)).to_vec() => vec![].and(&20u64),
 			twox_128(&three.to_keyed_vec(BALANCE_OF)).to_vec() => vec![].and(&30u64),