diff --git a/examples/dockwidgets/MyFrameworkWidgetFactory.cpp b/examples/dockwidgets/MyFrameworkWidgetFactory.cpp
index 84ba5099..ca5730dc 100644
--- a/examples/dockwidgets/MyFrameworkWidgetFactory.cpp
+++ b/examples/dockwidgets/MyFrameworkWidgetFactory.cpp
@@ -10,9 +10,11 @@
 */
 
 #include "MyFrameworkWidgetFactory.h"
+
 #include <kddockwidgets/FrameworkWidgetFactory.h>
 #include <kddockwidgets/private/widgets/TitleBarWidget_p.h>
-#include <kddockwidgets/multisplitter/Separator_qwidget.h>
+#include <kddockwidgets/private/multisplitter/Separator_qwidget.h>
+
 #include <QApplication>
 
 class MyTitleBar : public KDDockWidgets::TitleBarWidget
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 89da1946..05f7bfa8 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -194,12 +194,12 @@ if(MSVC AND NOT ${PROJECT_NAME}_STATIC)
 endif()
 install(FILES ${DOCKS_INSTALLABLE_INCLUDES} DESTINATION include/kddockwidgets)
 install(FILES ${DOCKS_INSTALLABLE_PRIVATE_INCLUDES} DESTINATION include/kddockwidgets/private)
-install(FILES private/multisplitter/Item_p.h DESTINATION include/kddockwidgets/multisplitter)
-install(FILES private/multisplitter/Widget.h DESTINATION include/kddockwidgets/multisplitter)
-install(FILES private/multisplitter/Widget_qwidget.h DESTINATION include/kddockwidgets/multisplitter)
-install(FILES private/multisplitter/Separator_p.h DESTINATION include/kddockwidgets/multisplitter)
-install(FILES private/multisplitter/Separator_qwidget.h DESTINATION include/kddockwidgets/multisplitter)
-install(FILES private/multisplitter/multisplitter_export.h DESTINATION include/kddockwidgets/multisplitter)
+install(FILES private/multisplitter/Item_p.h DESTINATION include/kddockwidgets/private/multisplitter)
+install(FILES private/multisplitter/Widget.h DESTINATION include/kddockwidgets/private/multisplitter)
+install(FILES private/multisplitter/Widget_qwidget.h DESTINATION include/kddockwidgets/private/multisplitter)
+install(FILES private/multisplitter/Separator_p.h DESTINATION include/kddockwidgets/private/multisplitter)
+install(FILES private/multisplitter/Separator_qwidget.h DESTINATION include/kddockwidgets/private/multisplitter)
+install(FILES private/multisplitter/multisplitter_export.h DESTINATION include/kddockwidgets/private/multisplitter)
 install(FILES ${DOCKS_INSTALLABLE_PRIVATE_WIDGET_INCLUDES} DESTINATION include/kddockwidgets/private/widgets)
 
 include(CMakePackageConfigHelpers)
diff --git a/src/QWidgetAdapter.h b/src/QWidgetAdapter.h
index b103def5..bbf5ea4a 100644
--- a/src/QWidgetAdapter.h
+++ b/src/QWidgetAdapter.h
@@ -41,7 +41,7 @@ inline bool isMinimized(QWindow *window)
 }}
 
 #ifdef KDDOCKWIDGETS_QTWIDGETS
-# include "../multisplitter/Widget_qwidget.h"
+# include "private/multisplitter/Widget_qwidget.h"
 # include "private/widgets/QWidgetAdapter_widgets_p.h"
 # include <QMainWindow>
   namespace KDDockWidgets {
@@ -55,7 +55,7 @@ inline bool isMinimized(QWindow *window)
     typedef QWidget WidgetType;
   }
 #else
-# include "../multisplitter/Widget_quick.h"
+# include "private/multisplitter/Widget_quick.h"
 # include "private/quick/QWidgetAdapter_quick_p.h"
   namespace KDDockWidgets {
     class MainWindowQuick;
diff --git a/src/fwd_headers/kddockwidgets/multisplitter/Separator_qwidget.h b/src/fwd_headers/kddockwidgets/private/multisplitter/Separator_qwidget.h
similarity index 83%
rename from src/fwd_headers/kddockwidgets/multisplitter/Separator_qwidget.h
rename to src/fwd_headers/kddockwidgets/private/multisplitter/Separator_qwidget.h
index 0d1f824b..83fdb86c 100644
--- a/src/fwd_headers/kddockwidgets/multisplitter/Separator_qwidget.h
+++ b/src/fwd_headers/kddockwidgets/private/multisplitter/Separator_qwidget.h
@@ -9,4 +9,4 @@
   Contact KDAB at <info@kdab.com> for commercial licensing options.
 */
 
-#include "../../../private/multisplitter/Separator_qwidget.h"
+#include "../../../../private/multisplitter/Separator_qwidget.h"
diff --git a/src/fwd_headers/kddockwidgets/multisplitter/Widget_qwidget.h b/src/fwd_headers/kddockwidgets/private/multisplitter/Widget_qwidget.h
similarity index 83%
rename from src/fwd_headers/kddockwidgets/multisplitter/Widget_qwidget.h
rename to src/fwd_headers/kddockwidgets/private/multisplitter/Widget_qwidget.h
index 8bf87a2e..2b7988f4 100644
--- a/src/fwd_headers/kddockwidgets/multisplitter/Widget_qwidget.h
+++ b/src/fwd_headers/kddockwidgets/private/multisplitter/Widget_qwidget.h
@@ -9,4 +9,4 @@
   Contact KDAB at <info@kdab.com> for commercial licensing options.
 */
 
-#include "../../../private/multisplitter/Widget_qwidget.h"
+#include "../../../../private/multisplitter/Widget_qwidget.h"