diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2ec56aa..8224644 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,6 +1,11 @@
 cmake_minimum_required(VERSION 3.5)
 project(QtAdvancedDockingSystem LANGUAGES CXX VERSION ${VERSION_SHORT})
-find_package(QT NAMES Qt6 Qt5 COMPONENTS Core REQUIRED)
+if (${QT_VERSION_MAJOR})
+  message(STATUS "Forced to use Qt version ${QT_VERSION_MAJOR}")
+  find_package(QT NAMES Qt${QT_VERSION_MAJOR} COMPONENTS Core REQUIRED)
+else()
+  find_package(QT NAMES Qt6 Qt5 COMPONENTS Core REQUIRED)
+endif()
 find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Core Gui Widgets REQUIRED)
 if (UNIX AND NOT APPLE)
     include_directories(${Qt${QT_VERSION_MAJOR}Gui_PRIVATE_INCLUDE_DIRS})