diff --git a/GUI/Models/IntensityDataItem.cpp b/GUI/Models/IntensityDataItem.cpp
index fcd9f73094ccf7138d89e4ee66d19f00d9946979..d7d2169143d781002735bb54c274dedf39010715 100644
--- a/GUI/Models/IntensityDataItem.cpp
+++ b/GUI/Models/IntensityDataItem.cpp
@@ -17,10 +17,10 @@
 #include "GUI/Models/Error.h"
 #include "GUI/Models/JobItemUtils.h"
 #include "GUI/Models/MaskItems.h"
+#include "GUI/Models/MaskUnitsConverter.h"
 #include "GUI/Models/ProjectionItems.h"
 #include "GUI/Models/SessionModel.h"
 #include "GUI/utils/ImportDataInfo.h"
-#include "GUI/Views/MaskWidgets/MaskUnitsConverter.h"
 
 namespace {
 ComboProperty gradientCombo()
diff --git a/GUI/Views/MaskWidgets/MaskUnitsConverter.cpp b/GUI/Models/MaskUnitsConverter.cpp
similarity index 97%
rename from GUI/Views/MaskWidgets/MaskUnitsConverter.cpp
rename to GUI/Models/MaskUnitsConverter.cpp
index b7e1e979e436fc73fcadaed2d8e44a631337b112..03b54faae16b38271e46f50911bfef2901a2866b 100644
--- a/GUI/Views/MaskWidgets/MaskUnitsConverter.cpp
+++ b/GUI/Models/MaskUnitsConverter.cpp
@@ -2,7 +2,7 @@
 //
 //  BornAgain: simulate and fit reflection and scattering
 //
-//! @file      GUI/Views/MaskWidgets/MaskUnitsConverter.cpp
+//! @file      GUI/Models/MaskUnitsConverter.cpp
 //! @brief     Implements class MaskUnitsConverter
 //!
 //! @homepage  http://www.bornagainproject.org
@@ -12,7 +12,7 @@
 //
 //  ************************************************************************************************
 
-#include "GUI/Views/MaskWidgets/MaskUnitsConverter.h"
+#include "GUI/Models/MaskUnitsConverter.h"
 #include "Device/Data/DataUtils.h"
 #include "GUI/Models/Error.h"
 #include "GUI/Models/IntensityDataItem.h"
diff --git a/GUI/Views/MaskWidgets/MaskUnitsConverter.h b/GUI/Models/MaskUnitsConverter.h
similarity index 87%
rename from GUI/Views/MaskWidgets/MaskUnitsConverter.h
rename to GUI/Models/MaskUnitsConverter.h
index 7977db5af4c3f904146b0f1544663a206ad5c945..63c24a2251aea5ccc64cb55068f14b96e49c764f 100644
--- a/GUI/Views/MaskWidgets/MaskUnitsConverter.h
+++ b/GUI/Models/MaskUnitsConverter.h
@@ -2,7 +2,7 @@
 //
 //  BornAgain: simulate and fit reflection and scattering
 //
-//! @file      GUI/Views/MaskWidgets/MaskUnitsConverter.h
+//! @file      GUI/Models/MaskUnitsConverter.h
 //! @brief     Defines class MaskUnitsConverter
 //!
 //! @homepage  http://www.bornagainproject.org
@@ -12,8 +12,8 @@
 //
 //  ************************************************************************************************
 
-#ifndef BORNAGAIN_GUI_VIEWS_MASKWIDGETS_MASKUNITSCONVERTER_H
-#define BORNAGAIN_GUI_VIEWS_MASKWIDGETS_MASKUNITSCONVERTER_H
+#ifndef BORNAGAIN_GUI_MODELS_MASKUNITSCONVERTER_H
+#define BORNAGAIN_GUI_MODELS_MASKUNITSCONVERTER_H
 
 class IntensityDataItem;
 class SessionItem;
@@ -49,4 +49,4 @@ private:
     EConvertionDirection m_direction;
 };
 
-#endif // BORNAGAIN_GUI_VIEWS_MASKWIDGETS_MASKUNITSCONVERTER_H
+#endif // BORNAGAIN_GUI_MODELS_MASKUNITSCONVERTER_H