diff --git a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp
index 86d6c69b59f..0f05ed0b39b 100644
--- a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp
+++ b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserview.cpp
@@ -212,6 +212,7 @@ bool MaterialBrowserView::isTexture(const ModelNode &node) const
 void MaterialBrowserView::modelAboutToBeDetached(Model *model)
 {
     m_widget->materialBrowserModel()->setMaterials({}, m_hasQuick3DImport);
+    m_widget->clearPreviewCache();
 
     if (m_propertyGroupsLoaded) {
         m_propertyGroupsLoaded = false;
@@ -301,6 +302,7 @@ void MaterialBrowserView::nodeAboutToBeRemoved(const ModelNode &removedNode)
     // removing the material editor node
     if (removedNode.id() == Constants::MATERIAL_LIB_ID) {
         m_widget->materialBrowserModel()->setMaterials({}, m_hasQuick3DImport);
+        m_widget->clearPreviewCache();
         return;
     }
 
diff --git a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserwidget.cpp b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserwidget.cpp
index ccbd972daa4..d9a3539d249 100644
--- a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserwidget.cpp
+++ b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserwidget.cpp
@@ -62,6 +62,11 @@ public:
         m_pixmaps.insert(node.internalId(), pixmap);
     }
 
+    void clearPixmapCache()
+    {
+        m_pixmaps.clear();
+    }
+
     QPixmap requestPixmap(const QString &id,
                           QSize *size,
                           [[maybe_unused]] const QSize &requestedSize) override
@@ -257,6 +262,11 @@ QQuickWidget *MaterialBrowserWidget::quickWidget() const
     return m_quickWidget.data();
 }
 
+void MaterialBrowserWidget::clearPreviewCache()
+{
+    m_previewImageProvider->clearPixmapCache();
+}
+
 QPointer<MaterialBrowserModel> MaterialBrowserWidget::materialBrowserModel() const
 {
     return m_materialBrowserModel;
diff --git a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserwidget.h b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserwidget.h
index 902883aa778..d1c0ef7c8a6 100644
--- a/src/plugins/qmldesigner/components/materialbrowser/materialbrowserwidget.h
+++ b/src/plugins/qmldesigner/components/materialbrowser/materialbrowserwidget.h
@@ -54,6 +54,8 @@ public:
 
     QQuickWidget *quickWidget() const;
 
+    void clearPreviewCache();
+
 protected:
     bool eventFilter(QObject *obj, QEvent *event) override;