diff --git a/cmake/targets/targets.cmake b/cmake/targets/targets.cmake
index a64fe57..d790d18 100644
--- a/cmake/targets/targets.cmake
+++ b/cmake/targets/targets.cmake
@@ -7,12 +7,13 @@ set(LT_SRCS
 )
 
 if (LT_WINDOWS)
+    set(LT_WINDOWS_ICON_PATH ${CMAKE_CURRENT_SOURCE_DIR}/lanthing.ico)
+    set(LT_LANTHING_RC ${CMAKE_CURRENT_BINARY_DIR}/lanthing.rc)
+
     configure_file(
         ${CMAKE_CURRENT_SOURCE_DIR}/lanthing.rc.in
-        ${CMAKE_CURRENT_SOURCE_DIR}/lanthing.rc
+        ${LT_LANTHING_RC}
         @ONLY)
-
-    set(LT_LANTHING_RC ${CMAKE_CURRENT_SOURCE_DIR}/lanthing.rc)
 endif()
 
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/src/ltlib)
diff --git a/lanthing.rc.in b/lanthing.rc.in
index 447fa03..1f2f962 100644
--- a/lanthing.rc.in
+++ b/lanthing.rc.in
@@ -5,7 +5,7 @@
 
 LANGUAGE LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED
 
-IDB_PNG1                ICON                     "lanthing.ico"
+IDB_PNG1                ICON                     "@LT_WINDOWS_ICON_PATH@"
 
 VS_VERSION_INFO VERSIONINFO
  FILEVERSION LT_VERSION
diff --git a/src/app/CMakeLists.txt b/src/app/CMakeLists.txt
index c9b420f..9957643 100644
--- a/src/app/CMakeLists.txt
+++ b/src/app/CMakeLists.txt
@@ -31,6 +31,11 @@ if (LT_WINDOWS)
     )
 endif()
 
+list(FIND LT_MODULE_APP_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/resources.qrc LT_APP_RESOURCES_INDEX)
+if (LT_APP_RESOURCES_INDEX EQUAL -1)
+    message(FATAL_ERROR "resources.qrc must stay in lt_module_app sources for UI resources")
+endif()
+
 add_library(lt_module_app STATIC
     ${LT_MODULE_APP_SRCS}
 )
diff --git a/src/app/views/gui.cpp b/src/app/views/gui.cpp
index 066022e..2eed3cd 100644
--- a/src/app/views/gui.cpp
+++ b/src/app/views/gui.cpp
@@ -39,6 +39,7 @@
 #include <QtWidgets/qsystemtrayicon.h>
 #include <QtWidgets/qwidget.h>
 #include <qapplication.h>
+#include <qdir.h>
 #include <qfile.h>
 #include <qobject.h>
 #include <qtranslator.h>
@@ -141,8 +142,17 @@ private:
 void GUIImpl::init(const GUI::Params& params, int argc, char** argv) {
     qInstallMessageHandler(ltQtOutput);
     qapp_ = std::make_unique<QApplication>(argc, argv);
+
+    // Ensure qrc resources packaged in static libs are force-initialized.
+    Q_INIT_RESOURCE(resources);
+
     setLanguage();
     QIcon icon(":/res/png_icons/pc2.png");
+    if (!QFile::exists(":/res/png_icons/pc2.png") || icon.isNull()) {
+        LOG(ERR) << "App icon resource is unavailable, path=:/res/png_icons/pc2.png";
+        LOG(ERR) << "Available entries under :/res/png_icons: "
+                 << QDir(":/res/png_icons").entryList(QDir::Files).join(",").toStdString();
+    }
     QApplication::setWindowIcon(icon);
     QApplication::setApplicationName("Lanthing");
     QApplication::setQuitOnLastWindowClosed(false);
@@ -188,6 +198,9 @@ void GUIImpl::init(const GUI::Params& params, int argc, char** argv) {
     sys_tray_icon_->setContextMenu(menu_.get());
     sys_tray_icon_->setIcon(icon);
 
+    if (!QSystemTrayIcon::isSystemTrayAvailable()) {
+        LOG(WARNING) << "System tray is not available on current desktop environment";
+    }
     sys_tray_icon_->show();
     main_window_->show();