diff --git a/parity/blockchain.rs b/parity/blockchain.rs
index c01bfdf75..4129433f4 100644
--- a/parity/blockchain.rs
+++ b/parity/blockchain.rs
@@ -133,7 +133,7 @@ pub struct ExportState {
 	pub max_balance: Option<U256>,
 }
 
-pub fn execute(cmd: BlockchainCmd) -> Result<String, String> {
+pub fn execute(cmd: BlockchainCmd) -> Result<(), String> {
 	match cmd {
 		BlockchainCmd::Kill(kill_cmd) => kill_db(kill_cmd),
 		BlockchainCmd::Import(import_cmd) => execute_import(import_cmd),
@@ -142,7 +142,7 @@ pub fn execute(cmd: BlockchainCmd) -> Result<String, String> {
 	}
 }
 
-fn execute_import(cmd: ImportBlockchain) -> Result<String, String> {
+fn execute_import(cmd: ImportBlockchain) -> Result<(), String> {
 	let timer = Instant::now();
 
 	// Setup panic handler
@@ -293,7 +293,7 @@ fn execute_import(cmd: ImportBlockchain) -> Result<String, String> {
 	let report = client.report();
 
 	let ms = timer.elapsed().as_milliseconds();
-	Ok(format!("Import completed in {} seconds, {} blocks, {} blk/s, {} transactions, {} tx/s, {} Mgas, {} Mgas/s",
+	info!("Import completed in {} seconds, {} blocks, {} blk/s, {} transactions, {} tx/s, {} Mgas, {} Mgas/s",
 		ms / 1000,
 		report.blocks_imported,
 		(report.blocks_imported * 1000) as u64 / ms,
@@ -301,7 +301,8 @@ fn execute_import(cmd: ImportBlockchain) -> Result<String, String> {
 		(report.transactions_applied * 1000) as u64 / ms,
 		report.gas_processed / From::from(1_000_000),
 		(report.gas_processed / From::from(ms * 1000)).low_u64(),
-	).into())
+	);
+	Ok(())
 }
 
 fn start_client(
@@ -368,7 +369,7 @@ fn start_client(
 	Ok(service)
 }
 
-fn execute_export(cmd: ExportBlockchain) -> Result<String, String> {
+fn execute_export(cmd: ExportBlockchain) -> Result<(), String> {
 	// Setup panic handler
 	let service = try!(start_client(cmd.dirs, cmd.spec, cmd.pruning, cmd.pruning_history, cmd.tracing, cmd.fat_db, cmd.compaction, cmd.wal, cmd.cache_config));
 	let panic_handler = PanicHandler::new_in_arc();
@@ -396,10 +397,11 @@ fn execute_export(cmd: ExportBlockchain) -> Result<String, String> {
 		}
 	}
 
-	Ok("Export completed.".into())
+	info!("Export completed.");
+	Ok(())
 }
 
-fn execute_export_state(cmd: ExportState) -> Result<String, String> {
+fn execute_export_state(cmd: ExportState) -> Result<(), String> {
 	// Setup panic handler
 	let service = try!(start_client(cmd.dirs, cmd.spec, cmd.pruning, cmd.pruning_history, cmd.tracing, cmd.fat_db, cmd.compaction, cmd.wal, cmd.cache_config));
 	let panic_handler = PanicHandler::new_in_arc();
@@ -475,10 +477,11 @@ fn execute_export_state(cmd: ExportState) -> Result<String, String> {
 		}
 	}
 	out.write_fmt(format_args!("\n]}}")).expect("Write error");
-	Ok("Export completed.".into())
+	info!("Export completed.");
+	Ok(())
 }
 
-pub fn kill_db(cmd: KillBlockchain) -> Result<String, String> {
+pub fn kill_db(cmd: KillBlockchain) -> Result<(), String> {
 	let spec = try!(cmd.spec.spec());
 	let genesis_hash = spec.genesis_header().hash();
 	let db_dirs = cmd.dirs.database(genesis_hash, None, spec.data_dir);
@@ -487,7 +490,8 @@ pub fn kill_db(cmd: KillBlockchain) -> Result<String, String> {
 	let algorithm = cmd.pruning.to_algorithm(&user_defaults);
 	let dir = db_dirs.db_path(algorithm);
 	try!(fs::remove_dir_all(&dir).map_err(|e| format!("Error removing database: {:?}", e)));
-	Ok("Database deleted.".to_owned())
+	info!("Database deleted.");
+	Ok(())
 }
 
 #[cfg(test)]
diff --git a/parity/main.rs b/parity/main.rs
index 1fb290f4b..91aab42a7 100644
--- a/parity/main.rs
+++ b/parity/main.rs
@@ -156,7 +156,7 @@ fn execute(command: Execute, can_restart: bool) -> Result<PostExecutionAction, S
 		Cmd::Hash(maybe_file) => print_hash_of(maybe_file).map(|s| PostExecutionAction::Print(s)),
 		Cmd::Account(account_cmd) => account::execute(account_cmd).map(|s| PostExecutionAction::Print(s)),
 		Cmd::ImportPresaleWallet(presale_cmd) => presale::execute(presale_cmd).map(|s| PostExecutionAction::Print(s)),
-		Cmd::Blockchain(blockchain_cmd) => blockchain::execute(blockchain_cmd).map(|s| PostExecutionAction::Print(s)),
+		Cmd::Blockchain(blockchain_cmd) => blockchain::execute(blockchain_cmd).map(|_| PostExecutionAction::Quit),
 		Cmd::SignerToken(signer_cmd) => signer::execute(signer_cmd).map(|s| PostExecutionAction::Print(s)),
 		Cmd::SignerSign { id, pwfile, port, authfile } => rpc_cli::signer_sign(id, pwfile, port, authfile).map(|s| PostExecutionAction::Print(s)),
 		Cmd::SignerList { port, authfile } => rpc_cli::signer_list(port, authfile).map(|s| PostExecutionAction::Print(s)),