diff --git a/include/trellis.h b/include/trellis.h
deleted file mode 100644
index 5784d96..0000000
--- a/include/trellis.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- *	Copyright (C) 2016 by Jonathan Naylor, G4KLX
- *
- *	Modifications of original code to work with OP25
- *	Copyright (C) 2019 by Graham J. Norbury
- *
- *	This program is free software; you can redistribute it and/or modify
- *	it under the terms of the GNU General Public License as published by
- *	the Free Software Foundation; version 2 of the License.
- *
- *	This program is distributed in the hope that it will be useful,
- *	but WITHOUT ANY WARRANTY; without even the implied warranty of
- *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *	GNU General Public License for more details.
- */
-
-#ifndef	DMRTrellis_H
-#define	DMRTrellis_H
-
-class CDMRTrellis {
-public:
-	CDMRTrellis();
-	~CDMRTrellis();
-
-	bool decode(const unsigned char* data, unsigned char* payload);
-
-private:
-	void deinterleave(const unsigned char* in, signed char* dibits) const;
-	void dibitsToPoints(const signed char* dibits, unsigned char* points) const;
-	void pointsToDibits(const unsigned char* points, signed char* dibits) const;
-	void bitsToTribits(const unsigned char* payload, unsigned char* tribits) const;
-	void tribitsToBits(const unsigned char* tribits, unsigned char* payload) const;
-	bool fixCode(unsigned char* points, unsigned int failPos, unsigned char* payload) const;
-	unsigned int checkCode(const unsigned char* points, unsigned char* tribits) const;
-};
-
-#endif