diff --git a/substrate/substrate/executor/wasm/target/wasm32-unknown-unknown/release/runtime_test.compact.wasm b/substrate/substrate/executor/wasm/target/wasm32-unknown-unknown/release/runtime_test.compact.wasm
index 17734432b4..70c0935b3f 100644
Binary files a/substrate/substrate/executor/wasm/target/wasm32-unknown-unknown/release/runtime_test.compact.wasm and b/substrate/substrate/executor/wasm/target/wasm32-unknown-unknown/release/runtime_test.compact.wasm differ
diff --git a/substrate/substrate/executor/wasm/target/wasm32-unknown-unknown/release/runtime_test.wasm b/substrate/substrate/executor/wasm/target/wasm32-unknown-unknown/release/runtime_test.wasm
index 241091f1cd..086250bae2 100755
Binary files a/substrate/substrate/executor/wasm/target/wasm32-unknown-unknown/release/runtime_test.wasm and b/substrate/substrate/executor/wasm/target/wasm32-unknown-unknown/release/runtime_test.wasm differ
diff --git a/substrate/substrate/runtime/staking/src/lib.rs b/substrate/substrate/runtime/staking/src/lib.rs
index bb89c2be8b..b62b585dbb 100644
--- a/substrate/substrate/runtime/staking/src/lib.rs
+++ b/substrate/substrate/runtime/staking/src/lib.rs
@@ -272,6 +272,14 @@ impl<T: Trait> Module<T> {
 		}
 	}
 
+	/// Lookup an address to get an Id, if there's one there.
+	pub fn lookup_address(a: address::Address<T::AccountId, T::AccountIndex>) -> Option<T::AccountId> {
+		match a {
+			address::Address::Id(i) => Some(i),
+			address::Address::Index(i) => Self::lookup_index(i),
+		}
+	}
+
 	// PUBLIC DISPATCH
 
 	/// Transfer some unlocked staking balance to another staker.