diff --git a/libs/ardour/audio_diskstream.cc b/libs/ardour/audio_diskstream.cc
index d0e2b24263..ceee6467ab 100644
--- a/libs/ardour/audio_diskstream.cc
+++ b/libs/ardour/audio_diskstream.cc
@@ -557,6 +557,11 @@ AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, nframes_
 	if (nominally_recording || (_session.get_record_enabled() && Config->get_punch_in())) {
 		OverlapType ot;
 		
+		// Safeguard against situations where process() goes haywire when autopunching and last_recordable_frame < first_recordable_frame
+		if (last_recordable_frame < first_recordable_frame) {
+			last_recordable_frame = max_frames; 
+		}
+
 		ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
 
 		switch (ot) {