diff --git a/lightning/src/ln/chanmon_update_fail_tests.rs b/lightning/src/ln/chanmon_update_fail_tests.rs
index 9b0e3036762..f854bc8a8c5 100644
--- a/lightning/src/ln/chanmon_update_fail_tests.rs
+++ b/lightning/src/ln/chanmon_update_fail_tests.rs
@@ -112,7 +112,7 @@ fn test_monitor_and_persister_update_fail() {
 		let mut w = test_utils::TestVecWriter(Vec::new());
 		monitor.write(&mut w).unwrap();
 		let new_monitor = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
-			&mut io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
+			&mut io::Cursor::new(&w.0), nodes[0].keys_manager).unwrap().1;
 		assert!(new_monitor == *monitor);
 		let chain_mon = test_utils::TestChainMonitor::new(Some(&chain_source), &tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
 		assert_eq!(chain_mon.watch_channel(outpoint, new_monitor), ChannelMonitorUpdateStatus::Completed);
diff --git a/lightning/src/ln/functional_tests.rs b/lightning/src/ln/functional_tests.rs
index e3ae9c7a20f..21d644fcc8b 100644
--- a/lightning/src/ln/functional_tests.rs
+++ b/lightning/src/ln/functional_tests.rs
@@ -8113,7 +8113,7 @@ fn test_update_err_monitor_lockdown() {
 		let mut w = test_utils::TestVecWriter(Vec::new());
 		monitor.write(&mut w).unwrap();
 		let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
-				&mut io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
+				&mut io::Cursor::new(&w.0), nodes[0].keys_manager).unwrap().1;
 		assert!(new_monitor == *monitor);
 		let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
 		assert_eq!(watchtower.watch_channel(outpoint, new_monitor), ChannelMonitorUpdateStatus::Completed);
@@ -8177,7 +8177,7 @@ fn test_concurrent_monitor_claim() {
 		let mut w = test_utils::TestVecWriter(Vec::new());
 		monitor.write(&mut w).unwrap();
 		let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
-				&mut io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
+				&mut io::Cursor::new(&w.0), nodes[0].keys_manager).unwrap().1;
 		assert!(new_monitor == *monitor);
 		let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
 		assert_eq!(watchtower.watch_channel(outpoint, new_monitor), ChannelMonitorUpdateStatus::Completed);
@@ -8206,7 +8206,7 @@ fn test_concurrent_monitor_claim() {
 		let mut w = test_utils::TestVecWriter(Vec::new());
 		monitor.write(&mut w).unwrap();
 		let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
-				&mut io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
+				&mut io::Cursor::new(&w.0), nodes[0].keys_manager).unwrap().1;
 		assert!(new_monitor == *monitor);
 		let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
 		assert_eq!(watchtower.watch_channel(outpoint, new_monitor), ChannelMonitorUpdateStatus::Completed);