diff --git a/src/kernel/dguiapplicationhelper.cpp b/src/kernel/dguiapplicationhelper.cpp
index 3eec52e..5541a27 100644
--- a/src/kernel/dguiapplicationhelper.cpp
+++ b/src/kernel/dguiapplicationhelper.cpp
@@ -39,7 +39,6 @@
 #include <QLockFile>
 #include <QDirIterator>
 #include <QDesktopServices>
-#include <QTimer>
 
 #ifdef Q_OS_UNIX
 #include <QDBusError>
@@ -495,10 +494,7 @@ DGuiApplicationHelper::DGuiApplicationHelper()
     : QObject(nullptr)
     , DObject(*new DGuiApplicationHelperPrivate(this))
 {
-    // load qt/qtbase translation for qt app which load dtk ?
-    QTimer::singleShot(0, [](){
-        DGuiApplicationHelper::loadTranslator();
-    });
+
 }
 
 void DGuiApplicationHelper::initialize()
diff --git a/src/util/private/diconproxyengine.cpp b/src/util/private/diconproxyengine.cpp
index 2406c5c..1728c22 100644
--- a/src/util/private/diconproxyengine.cpp
+++ b/src/util/private/diconproxyengine.cpp
@@ -18,7 +18,7 @@
 #include <QDir>
 
 #include <private/qiconloader_p.h>
-#if (XDG_ICON_VERSION_MAR >= 3)
+#if XDG_ICON_VERSION_MAR >= 3
 #define private public
 #include <private/xdgiconloader/xdgiconloader_p.h>
 #undef private
@@ -156,8 +156,9 @@ QIconEngine *DIconProxyEngine::clone() const
 
 bool DIconProxyEngine::read(QDataStream &in)
 {
-    // ensureEngine, will changed themeName if not the same
     in >> m_iconName >> m_iconThemeName;
+
+    ensureEngine();
     return m_iconEngine ? m_iconEngine->read(in) : false;
 }
 
diff --git a/src/util/private/xdgiconproxyengine.cpp b/src/util/private/xdgiconproxyengine.cpp
index 534fafc..9b296cb 100644
--- a/src/util/private/xdgiconproxyengine.cpp
+++ b/src/util/private/xdgiconproxyengine.cpp
@@ -243,11 +243,8 @@ void XdgIconProxyEngine::paint(QPainter *painter, const QRect &rect, QIcon::Mode
 QPixmap XdgIconProxyEngine::pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state)
 {
     engine->ensureLoaded();
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+
     QIconLoaderEngineEntry *entry = engine->entryForSize(size);
-#else
-    QIconLoaderEngineEntry *entry = engine->entryForSize(engine->m_info ,size);
-#endif
 
     if (!entry) {
         DEEPIN_XDG_THEME::colorScheme.setLocalData(DEEPIN_XDG_THEME::PALETTE_MAP());
@@ -302,12 +299,7 @@ void XdgIconProxyEngine::virtual_hook(int id, void *data)
         QIconEngine::ScaledPixmapArgument &arg = *reinterpret_cast<QIconEngine::ScaledPixmapArgument *>(data);
         // QIcon::pixmap() multiplies size by the device pixel ratio.
         const int integerScale = qCeil(arg.scale);
-        
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
         QIconLoaderEngineEntry *entry = engine->entryForSize(arg.size / integerScale, integerScale);
-#else
-        QIconLoaderEngineEntry *entry = engine->entryForSize(engine->m_info, arg.size / integerScale, integerScale);
-#endif
         // 先禁用缩放，因为此size是已经缩放过的
         bool useHighDpiPixmap = qGuiApp->testAttribute(Qt::AA_UseHighDpiPixmaps);
         qGuiApp->setAttribute(Qt::AA_UseHighDpiPixmaps, false);
diff --git a/src/util/private/xdgiconproxyengine_p.h b/src/util/private/xdgiconproxyengine_p.h
index 30a340b..d00f184 100644
--- a/src/util/private/xdgiconproxyengine_p.h
+++ b/src/util/private/xdgiconproxyengine_p.h
@@ -6,7 +6,6 @@
 #define XDGICONPROXYENGINE_H
 
 #include <dtkgui_global.h>
-#include <QHash>
 
 #if XDG_ICON_VERSION_MAR >= 3
 #include <QIconEngine>
@@ -26,8 +25,7 @@ struct ScalableEntry;
 class QIconLoaderEngineEntry;
 class XdgIconLoaderEngine;
 DGUI_BEGIN_NAMESPACE
-
-#if (XDG_ICON_VERSION_MAR >= 3)
+#if XDG_ICON_VERSION_MAR >= 3
 class Q_DECL_HIDDEN XdgIconProxyEngine : public QIconEngine
 {
 public:
diff --git a/src/util/util.cmake b/src/util/util.cmake
index cfaa7fc..4c62960 100644
--- a/src/util/util.cmake
+++ b/src/util/util.cmake
@@ -1,9 +1,10 @@
 if(NOT DTK_DISABLE_LIBXDG)
     message("Enable libxdg!")
-    find_package(qt${QT_VERSION_MAJOR}xdgiconloader)
-
-    add_definitions(-DXDG_ICON_VERSION_MAR=${qt${QT_VERSION_MAJOR}xdgiconloader_VERSION_MAJOR})
-
+#    find_package(qt${QT_VERSION_MAJOR}xdgiconloader)
+if (Qt5_FOUND)
+    find_package(qt5xdgiconloader)
+    add_definitions(-DXDG_ICON_VERSION_MAR=${qt5xdgiconloader_VERSION_MAJOR})
+endif()
     set(UTIL_PRIVATE
         ${CMAKE_CURRENT_LIST_DIR}/private/xdgiconproxyengine_p.h
         ${CMAKE_CURRENT_LIST_DIR}/private/xdgiconproxyengine.cpp
diff --git a/tests/dcis/selected_indicator.dci b/tests/dcis/selected_indicator.dci
index 27f1a44..c164df6 100644
Binary files a/tests/dcis/selected_indicator.dci and b/tests/dcis/selected_indicator.dci differ
diff --git a/tests/src/ut_diconproxyengine.cpp b/tests/src/ut_diconproxyengine.cpp
index 3669edf..a4737a4 100644
--- a/tests/src/ut_diconproxyengine.cpp
+++ b/tests/src/ut_diconproxyengine.cpp
@@ -6,6 +6,7 @@
 
 #include <QPainter>
 #include <QIODevice>
+#include <private/qicon_p.h>
 
 #include <DGuiApplicationHelper>
 #include <DPlatformTheme>
@@ -115,18 +116,21 @@ TEST_F(ut_DIconProxyEngine, read_write)
         ASSERT_EQ(iconName, mIconEngine->iconName());
     }
 
-    iconName = "test_icon_name";
-    themeName = "test_theme_name";
     {
+        auto engine = new DIconProxyEngine("selected_indicator" ,DIconTheme::DontFallbackToQIconFromTheme);
+        QIcon icon_write(engine);
         QDataStream out(&data, QIODevice::WriteOnly);
-        out << iconName << themeName;
-    }
-    {
+        out << icon_write;
+
+        QIcon icon_read;
         QDataStream in(&data, QIODevice::ReadOnly);
-        mIconEngine->read(in);
+        in >> icon_read;
 
-        ASSERT_EQ(themeName, mIconEngine->themeName());
-        ASSERT_EQ(iconName, mIconEngine->iconName());
+        ASSERT_TRUE(icon_read.data_ptr()->engine);
+        EXPECT_EQ(icon_read.data_ptr()->engine->key(),
+                  engine->key());
+        EXPECT_EQ(icon_read.data_ptr()->engine->iconName(),
+                    engine->iconName());
     }
 }
 
diff --git a/tests/src/ut_xdgiconproxyengine.cpp b/tests/src/ut_xdgiconproxyengine.cpp
index 5bc1585..92c2e92 100644
--- a/tests/src/ut_xdgiconproxyengine.cpp
+++ b/tests/src/ut_xdgiconproxyengine.cpp
@@ -89,11 +89,8 @@ TEST_F(ut_XdgIconProxyEngine, pixmapByEntry)
     QPalette pa = qApp->palette();
     // ensureLoaded
     EXPECT_EQ(s64, mIconEngine->actualSize(s64, QIcon::Normal, QIcon::On));
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+
     QIconLoaderEngineEntry *entry = mIconEngine->engine->entryForSize(s64);
-#else
-    QIconLoaderEngineEntry *entry = mIconEngine->engine->entryForSize(mIconEngine->engine->m_info, s64);
-#endif
     ASSERT_TRUE(entry);
 
     QPixmap normalPix = mIconEngine->pixmapByEntry(entry, s64, QIcon::Normal, QIcon::On);