diff --git a/libs/ardour/ardour/disk_reader.h b/libs/ardour/ardour/disk_reader.h
index 8e124a27dd..cab4a33501 100644
--- a/libs/ardour/ardour/disk_reader.h
+++ b/libs/ardour/ardour/disk_reader.h
@@ -52,9 +52,6 @@ class LIBARDOUR_API DiskReader : public DiskIOProcessor
 	int overwrite_existing_buffers ();
 	void set_pending_overwrite (bool yn);
 
-	samplecnt_t roll_delay() const { return _roll_delay; }
-	void set_roll_delay (samplecnt_t);
-
 	virtual XMLNode& state (bool full);
 	int set_state (const XMLNode&, int version);
 
@@ -114,10 +111,6 @@ class LIBARDOUR_API DiskReader : public DiskIOProcessor
 	void playlist_ranges_moved (std::list< Evoral::RangeMove<samplepos_t> > const &, bool);
 
   private:
-	/** The number of samples by which this diskstream's output should be delayed
-	    with respect to the transport sample.  This is used for latency compensation.
-	*/
-	samplecnt_t   _roll_delay;
 	samplepos_t    overwrite_sample;
 	off_t         overwrite_offset;
 	bool          _pending_overwrite;
diff --git a/libs/ardour/disk_reader.cc b/libs/ardour/disk_reader.cc
index 6f559b6167..254b81e168 100644
--- a/libs/ardour/disk_reader.cc
+++ b/libs/ardour/disk_reader.cc
@@ -49,7 +49,6 @@ bool DiskReader::_no_disk_output = false;
 
 DiskReader::DiskReader (Session& s, string const & str, DiskIOProcessor::Flag f)
 	: DiskIOProcessor (s, str, f)
-	, _roll_delay (0)
 	, overwrite_sample (0)
         , overwrite_offset (0)
         , _pending_overwrite (false)
@@ -126,12 +125,6 @@ DiskReader::set_name (string const & str)
 	return true;
 }
 
-void
-DiskReader::set_roll_delay (ARDOUR::samplecnt_t nframes)
-{
-	_roll_delay = nframes;
-}
-
 XMLNode&
 DiskReader::state (bool full)
 {