diff --git a/Modules/QtPython/CMakeLists.txt b/Modules/QtPython/CMakeLists.txt
index c5ae64a197..7ffe7c76da 100644
--- a/Modules/QtPython/CMakeLists.txt
+++ b/Modules/QtPython/CMakeLists.txt
@@ -1,17 +1,19 @@
 if(MITK_USE_Python)
+  mitkFunctionCheckCompilerFlags("/wd4273" CMAKE_CXX_FLAGS)
+
   set(OpenCV_DEP )
   if(MITK_USE_OpenCV)
     set(OpenCV_DEP OpenCV)
   endif()
 
   mitk_create_module(
     DEPENDS MitkCore MitkQtWidgets MitkPython
     PACKAGE_DEPENDS
     PUBLIC Qt5|Widgets CTK|CTKScriptingPythonCore+CTKScriptingPythonWidgets
     )
 
   # temporarily disabled, bug-19153
   if(UNIX)
     add_subdirectory(Testing)
   endif()
 endif()