diff --git a/libs/ardour/disk_writer.cc b/libs/ardour/disk_writer.cc
index a7ab0fd0c8..cb62f932b6 100644
--- a/libs/ardour/disk_writer.cc
+++ b/libs/ardour/disk_writer.cc
@@ -150,6 +150,9 @@ DiskWriter::check_record_status (samplepos_t transport_sample, double speed, boo
 
 		if (_alignment_style == ExistingMaterial) {
 			_first_recordable_sample += _capture_offset + _playback_offset;
+			if (_accumulated_capture_offset == 0) {
+				_accumulated_capture_offset = _playback_offset;
+			}
 		}
 
 		if  (_session.config.get_punch_out () && 0 != (loc = _session.locations()->auto_punch_location ())) {