diff --git a/demo/CMakeLists.txt b/demo/CMakeLists.txt
index 7580503df..553bd1845 100644
--- a/demo/CMakeLists.txt
+++ b/demo/CMakeLists.txt
@@ -23,7 +23,7 @@ set(CMAKE_INCLUDE_CURRENT_DIR ON)
 set(ads_demo_SRCS
     main.cpp
     MainWindow.cpp
-    MainWindow.ui
+    mainwindow.ui
     main.qrc
 )
 add_executable(AdvancedDockingSystemDemo WIN32 ${ads_demo_SRCS})