diff --git a/ethcore/src/executive.rs b/ethcore/src/executive.rs
index cc5c1ffde..f5ff95d71 100644
--- a/ethcore/src/executive.rs
+++ b/ethcore/src/executive.rs
@@ -433,7 +433,7 @@ impl<'a> Executive<'a> {
 		self.state.add_balance(&self.info.author, &fees_value);
 
 		// perform suicides
-		for (address, _) in &substate.suicides {
+		for address in &substate.suicides {
 			self.state.kill_account(address);
 		}
 
diff --git a/ethcore/src/externalities.rs b/ethcore/src/externalities.rs
index ae1ae9d3a..493b21611 100644
--- a/ethcore/src/externalities.rs
+++ b/ethcore/src/externalities.rs
@@ -263,12 +263,7 @@ impl<'a, T, V> Ext for Externalities<'a, T, V> where T: 'a + Tracer, V: 'a + VMT
 			self.state.transfer_balance(&address, refund_address, &balance);
 		}
 
-		let details = SuicideDetails {
-			refund_address: refund_address.clone(),
-			value: balance,
-		};
-
-		self.substate.suicides.insert(address, details);
+		self.substate.suicides.insert(address);
 	}
 
 	fn schedule(&self) -> &Schedule {
diff --git a/ethcore/src/substate.rs b/ethcore/src/substate.rs
index 6cca224a6..de703f369 100644
--- a/ethcore/src/substate.rs
+++ b/ethcore/src/substate.rs
@@ -15,25 +15,16 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Execution environment substate.
-use std::collections::HashMap;
+use std::collections::HashSet;
 use util::{Address, U256};
 use log_entry::LogEntry;
 
-/// Details of the commited suicide.
-#[derive(Debug, Default)]
-pub struct SuicideDetails {
-	/// Suicided contract heir.
-	pub refund_address: Address,
-	/// Balance of the contract just before suicide.
-	pub value: U256,
-}
-
 /// State changes which should be applied in finalize,
 /// after transaction is fully executed.
 #[derive(Debug, Default)]
 pub struct Substate {
 	/// Any accounts that have suicided.
-	pub suicides: HashMap<Address, SuicideDetails>,
+	pub suicides: HashSet<Address>,
 
 	/// Any logs.
 	pub logs: Vec<LogEntry>,
@@ -81,7 +72,7 @@ mod tests {
 			data: vec![]
 		});
 		sub_state.sstore_clears_count = 5.into();
-		sub_state.suicides.insert(10u64.into(), Default::default());
+		sub_state.suicides.insert(10u64.into());
 
 		let mut sub_state_2 = Substate::new();
 		sub_state_2.contracts_created.push(2u64.into());