diff --git a/UI/frontend-plugins/frontend-tools/cmake/legacy.cmake b/UI/frontend-plugins/frontend-tools/cmake/legacy.cmake
index 4d5a5547e..f4001186d 100644
--- a/UI/frontend-plugins/frontend-tools/cmake/legacy.cmake
+++ b/UI/frontend-plugins/frontend-tools/cmake/legacy.cmake
@@ -47,8 +47,6 @@ target_sources(
           output-timer.cpp
           ${CMAKE_SOURCE_DIR}/UI/double-slider.cpp
           ${CMAKE_SOURCE_DIR}/UI/double-slider.hpp
-          ${CMAKE_SOURCE_DIR}/UI/horizontal-scroll-area.cpp
-          ${CMAKE_SOURCE_DIR}/UI/horizontal-scroll-area.hpp
           ${CMAKE_SOURCE_DIR}/UI/properties-view.cpp
           ${CMAKE_SOURCE_DIR}/UI/properties-view.hpp
           ${CMAKE_SOURCE_DIR}/UI/properties-view.moc.hpp