diff --git a/ProcessLib/HT/CreateHTProcess.cpp b/ProcessLib/HT/CreateHTProcess.cpp
index 5a0302421a2d2e3c7560c37dff0e8dc3c96908d4..05ea1c3cf0d9a7ad75c30a86245104dc23d18655 100644
--- a/ProcessLib/HT/CreateHTProcess.cpp
+++ b/ProcessLib/HT/CreateHTProcess.cpp
@@ -18,6 +18,7 @@
 
 #include "HTProcess.h"
 #include "HTMaterialProperties.h"
+#include "HTLocalAssemblerInterface.h"
 
 namespace ProcessLib
 {
diff --git a/ProcessLib/HT/HTProcess.h b/ProcessLib/HT/HTProcess.h
index b04ab174b4a6351e854e5dd9dea1c057b95eb6b1..2cf76cc7964642ee7a4b21a60b1be31984663a1f 100644
--- a/ProcessLib/HT/HTProcess.h
+++ b/ProcessLib/HT/HTProcess.h
@@ -9,7 +9,6 @@
 
 #pragma once
 
-#include "HTFEM.h"
 #include "HTMaterialProperties.h"
 #include "NumLib/Extrapolation/LocalLinearLeastSquaresExtrapolator.h"
 #include "ProcessLib/Process.h"
@@ -18,6 +17,8 @@ namespace ProcessLib
 {
 namespace HT
 {
+class HTLocalAssemblerInterface;
+
 /**
  * # HT process
  *