diff --git a/ProcessLib/ThermoMechanics/ThermoMechanicsProcess-fwd.h b/ProcessLib/ThermoMechanics/ThermoMechanicsProcess-fwd.h
deleted file mode 100644
index fc48ba4a62a5cf5e4d6b861a091e4d34628b9265..0000000000000000000000000000000000000000
--- a/ProcessLib/ThermoMechanics/ThermoMechanicsProcess-fwd.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/**
- * \copyright
- * Copyright (c) 2012-2017, OpenGeoSys Community (http://www.opengeosys.org)
- *            Distributed under a Modified BSD License.
- *              See accompanying file LICENSE.txt or
- *              http://www.opengeosys.org/project/license
- *
- */
-
-#pragma once
-
-#include "ThermoMechanicsProcess.h"
-
-extern template class ProcessLib::ThermoMechanics::ThermoMechanicsProcess<2>;
-extern template class ProcessLib::ThermoMechanics::ThermoMechanicsProcess<3>;
diff --git a/ProcessLib/ThermoMechanics/ThermoMechanicsProcess.cpp b/ProcessLib/ThermoMechanics/ThermoMechanicsProcess.cpp
index 55fddd02e3d5aec27f3fbab725e3ab761011e976..d13a871acbce2d4efe3449d1125656689916c25f 100644
--- a/ProcessLib/ThermoMechanics/ThermoMechanicsProcess.cpp
+++ b/ProcessLib/ThermoMechanics/ThermoMechanicsProcess.cpp
@@ -8,7 +8,6 @@
  */
 
 #include "ThermoMechanicsProcess.h"
-#include "ThermoMechanicsProcess-fwd.h"
 
 namespace ProcessLib
 {