diff --git a/apps/openmw/mwgui/windowmanagerimp.cpp b/apps/openmw/mwgui/windowmanagerimp.cpp
index e2404c58a..6f2e7755d 100644
--- a/apps/openmw/mwgui/windowmanagerimp.cpp
+++ b/apps/openmw/mwgui/windowmanagerimp.cpp
@@ -33,6 +33,7 @@
 #include <components/translation/translation.hpp>
 
 #include <components/myguiplatform/myguiplatform.hpp>
+#include <components/myguiplatform/myguirendermanager.hpp>
 
 #include <components/vfs/manager.hpp>
 
diff --git a/components/CMakeLists.txt b/components/CMakeLists.txt
index 00eac6ca5..1460dee7b 100644
--- a/components/CMakeLists.txt
+++ b/components/CMakeLists.txt
@@ -115,7 +115,7 @@ add_component_dir (loadinglistener
     )
 
 add_component_dir (myguiplatform
-    myguirendermanager myguidatamanager myguiplatform myguitexture myguiloglistener
+    myguirendermanager myguidatamanager myguiplatform myguitexture myguiloglistener additivelayer
     )
 
 add_component_dir (widgets
diff --git a/components/myguiplatform/myguiplatform.cpp b/components/myguiplatform/myguiplatform.cpp
index 01d6ca567..22b88438f 100644
--- a/components/myguiplatform/myguiplatform.cpp
+++ b/components/myguiplatform/myguiplatform.cpp
@@ -1,2 +1,64 @@
 #include "myguiplatform.hpp"
 
+#include "myguirendermanager.hpp"
+#include "myguidatamanager.hpp"
+#include "myguiloglistener.hpp"
+
+namespace osgMyGUI
+{
+
+Platform::Platform(osgViewer::Viewer *viewer, osg::Group *guiRoot, Resource::TextureManager *textureManager, float uiScalingFactor)
+    : mRenderManager(nullptr)
+    , mDataManager(nullptr)
+    , mLogManager(nullptr)
+    , mLogFacility(nullptr)
+{
+    mLogManager = new MyGUI::LogManager();
+    mRenderManager = new RenderManager(viewer, guiRoot, textureManager, uiScalingFactor);
+    mDataManager = new DataManager();
+}
+
+Platform::~Platform()
+{
+    delete mRenderManager;
+    mRenderManager = nullptr;
+    delete mDataManager;
+    mDataManager = nullptr;
+    delete mLogManager;
+    mLogManager = nullptr;
+    delete mLogFacility;
+    mLogFacility = nullptr;
+}
+
+void Platform::initialise(const std::string &resourcePath, const std::string &_logName)
+{
+    if (!_logName.empty() && !mLogFacility)
+    {
+        mLogFacility = new LogFacility(_logName, false);
+        mLogManager->addLogSource(mLogFacility->getSource());
+    }
+
+    mDataManager->setResourcePath(resourcePath);
+
+    mRenderManager->initialise();
+    mDataManager->initialise();
+}
+
+void Platform::shutdown()
+{
+    mRenderManager->shutdown();
+    mDataManager->shutdown();
+}
+
+RenderManager *Platform::getRenderManagerPtr()
+{
+    return mRenderManager;
+}
+
+DataManager *Platform::getDataManagerPtr()
+{
+    return mDataManager;
+}
+
+
+}
diff --git a/components/myguiplatform/myguiplatform.hpp b/components/myguiplatform/myguiplatform.hpp
index 513267c99..56562e12a 100644
--- a/components/myguiplatform/myguiplatform.hpp
+++ b/components/myguiplatform/myguiplatform.hpp
@@ -1,71 +1,46 @@
 #ifndef OPENMW_COMPONENTS_MYGUIPLATFORM_MYGUIPLATFORM_H
 #define OPENMW_COMPONENTS_MYGUIPLATFORM_MYGUIPLATFORM_H
 
-#include "MyGUI_Prerequest.h"
-#include "MyGUI_LogManager.h"
+#include <string>
 
-#include "myguirendermanager.hpp"
-#include "myguidatamanager.hpp"
-#include "myguiloglistener.hpp"
+namespace osgViewer
+{
+    class Viewer;
+}
+namespace osg
+{
+    class Group;
+}
+namespace Resource
+{
+    class TextureManager;
+}
+namespace MyGUI
+{
+    class LogManager;
+}
 
 namespace osgMyGUI
 {
 
+    class RenderManager;
+    class DataManager;
+    class LogFacility;
+
     class Platform
     {
     public:
-        Platform(osgViewer::Viewer* viewer, osg::Group* guiRoot, Resource::TextureManager* textureManager, float uiScalingFactor)
-            : mRenderManager(nullptr)
-            , mDataManager(nullptr)
-            , mLogManager(nullptr)
-            , mLogFacility(nullptr)
-        {
-            mLogManager = new MyGUI::LogManager();
-            mRenderManager = new RenderManager(viewer, guiRoot, textureManager, uiScalingFactor);
-            mDataManager = new DataManager();
-        }
-
-        ~Platform()
-        {
-            delete mRenderManager;
-            mRenderManager = nullptr;
-            delete mDataManager;
-            mDataManager = nullptr;
-            delete mLogManager;
-            mLogManager = nullptr;
-            delete mLogFacility;
-            mLogFacility = nullptr;
-        }
-
-        void initialise(const std::string& resourcePath, const std::string& _logName = "MyGUI.log")
-        {
-            if (!_logName.empty() && !mLogFacility)
-            {
-                mLogFacility = new LogFacility(_logName, false);
-                mLogManager->addLogSource(mLogFacility->getSource());
-            }
+        Platform(osgViewer::Viewer* viewer, osg::Group* guiRoot, Resource::TextureManager* textureManager, float uiScalingFactor);
 
-            mDataManager->setResourcePath(resourcePath);
+        ~Platform();
 
-            mRenderManager->initialise();
-            mDataManager->initialise();
-        }
+        void initialise(const std::string& resourcePath, const std::string& _logName = "MyGUI.log");
 
-        void shutdown()
-        {
-            mRenderManager->shutdown();
-            mDataManager->shutdown();
-        }
+        void shutdown();
 
-        RenderManager* getRenderManagerPtr()
-        {
-            return mRenderManager;
-        }
+        RenderManager* getRenderManagerPtr();
 
-        DataManager* getDataManagerPtr()
-        {
-            return mDataManager;
-        }
+        DataManager* getDataManagerPtr();
 
     private:
         RenderManager* mRenderManager;