diff --git a/examples/centralWidget/CMakeLists.txt b/examples/centralWidget/CMakeLists.txt
index 4cc7de9..aa69603 100644
--- a/examples/centralWidget/CMakeLists.txt
+++ b/examples/centralWidget/CMakeLists.txt
@@ -6,7 +6,6 @@ add_executable(CentralWidgetExample WIN32
     main.cpp
     mainwindow.cpp
     mainwindow.ui
-    digitalclock.cpp
 )
 target_include_directories(CentralWidgetExample PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/../../src")
 target_link_libraries(CentralWidgetExample PRIVATE qtadvanceddocking)