diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.cpp b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.cpp
index 19506042bb9..a01ce38fc72 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.cpp
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.cpp
@@ -29,8 +29,6 @@
 #include "itemlibraryitem.h"
 #include "itemlibrarysection.h"
 
-#include <components/previewtooltip/previewtooltipbackend.h>
-
 #include <model.h>
 #include <nodehints.h>
 #include <nodemetainfo.h>
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibraryresourceview.cpp b/src/plugins/qmldesigner/components/itemlibrary/itemlibraryresourceview.cpp
index cbe21c190eb..d28f1312447 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibraryresourceview.cpp
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibraryresourceview.cpp
@@ -29,7 +29,6 @@
 
 #include <theme.h>
 #include <imagecache.h>
-#include <previewtooltip/previewtooltipbackend.h>
 
 #include <QAction>
 #include <QActionGroup>
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibraryresourceview.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibraryresourceview.h
index 590d4ad68ef..db213331e7a 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibraryresourceview.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibraryresourceview.h
@@ -25,6 +25,8 @@
 
 #pragma once
 
+#include <previewtooltip/previewtooltipbackend.h>
+
 #include <QListView>
 
 QT_BEGIN_NAMESPACE
@@ -33,7 +35,6 @@ QT_END_NAMESPACE
 
 namespace QmlDesigner {
 
-class PreviewTooltipBackend;
 class ImageCache;
 
 class ItemLibraryResourceView : public QListView {
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp
index 96aa07bf9eb..839916d6a1d 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.cpp
@@ -38,7 +38,6 @@
 #include <itemlibrarymodel.h>
 #include <metainfo.h>
 #include <model.h>
-#include <previewtooltip/previewtooltipbackend.h>
 #include <rewritingexception.h>
 #include <qmldesignerconstants.h>
 #include <qmldesignerplugin.h>
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h
index c4ca4c6e702..877fdb5a0e2 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h
@@ -30,6 +30,7 @@
 
 #include <utils/fancylineedit.h>
 #include <utils/dropsupport.h>
+#include <previewtooltip/previewtooltipbackend.h>
 
 #include <QFrame>
 #include <QToolButton>
@@ -55,7 +56,6 @@ class CustomFileSystemModel;
 
 class ItemLibraryModel;
 class ItemLibraryResourceView;
-class PreviewTooltipBackend;
 class ImageCache;
 class ImageCacheCollector;