diff --git a/qgroundcontrol.pro b/qgroundcontrol.pro
index 0e0761b..4048ce9 100644
--- a/qgroundcontrol.pro
+++ b/qgroundcontrol.pro
@@ -691,7 +691,6 @@ HEADERS += \
     src/comm/LinkManager.h \
     src/comm/LogReplayLink.h \
     src/comm/MAVLinkProtocol.h \
-    src/comm/ProtocolInterface.h \
     src/comm/QGCMAVLink.h \
     src/comm/TCPLink.h \
     src/comm/UDPLink.h \
diff --git a/src/comm/LinkManager.h b/src/comm/LinkManager.h
index db44b41..978aa18 100644
--- a/src/comm/LinkManager.h
+++ b/src/comm/LinkManager.h
@@ -21,7 +21,6 @@
 #include "LinkInterface.h"
 #include "QGCLoggingCategory.h"
 #include "QGCToolbox.h"
-#include "ProtocolInterface.h"
 #include "MAVLinkProtocol.h"
 #if !defined(__mobile__)
 #include "LogReplayLink.h"
diff --git a/src/comm/ProtocolInterface.h b/src/comm/ProtocolInterface.h
deleted file mode 100644
index 8dcef71..0000000
--- a/src/comm/ProtocolInterface.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/****************************************************************************
- *
- * (c) 2009-2020 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
- *
- * QGroundControl is licensed according to the terms in the file
- * COPYING.md in the root of the source code directory.
- *
- ****************************************************************************/
-
-
-/**
- * @file
- *   @brief Interface class for protocols
- *
- *   @author Lorenz Meier <mavteam@student.ethz.ch>
- *
- */
-
-#pragma once
-
-#include <QThread>
-#include <QString>
-#include <QByteArray>
-#include "LinkInterface.h"
-
-/**
- * @brief Interface for all protocols.
- *
- * This class defines the interface for
- * communication packets transported by the LinkManager.
- *
- * @see LinkManager.
- *
- **/
-class ProtocolInterface : public QThread
-{
-    Q_OBJECT
-public:
-    virtual ~ProtocolInterface  () {}
-    virtual QString getName     () = 0;
-    /**
-     * Reset the received, error, and dropped counts for the given link. Useful for
-     * when reconnecting a link.
-     * @param link The link to reset metadata for.
-     */
-    virtual void resetMetadataForLink(LinkInterface *link) = 0;
-
-public slots:
-    virtual void receiveBytes       (LinkInterface *link, QByteArray b) = 0;
-    virtual void linkStatusChanged  (bool connected) = 0;
-
-signals:
-    /** @brief Update the packet loss from one system */
-    void receiveLossChanged         (int uasId, float loss);
-
-};
diff --git a/src/uas/UASInterface.h b/src/uas/UASInterface.h
index c95b733..0c8511e 100644
--- a/src/uas/UASInterface.h
+++ b/src/uas/UASInterface.h
@@ -20,7 +20,6 @@
 #include <QPointer>
 
 #include "LinkInterface.h"
-#include "ProtocolInterface.h"
 
 #ifndef __mobile__
 class FileManager;