diff --git a/Modules/QtWidgetsExt/CMakeLists.txt b/Modules/QtWidgetsExt/CMakeLists.txt
index a8e2d54331..7916170c25 100644
--- a/Modules/QtWidgetsExt/CMakeLists.txt
+++ b/Modules/QtWidgetsExt/CMakeLists.txt
@@ -1,5 +1,6 @@
 MITK_CREATE_MODULE(
   INCLUDE_DIRS QmitkApplicationBase QmitkPropertyObservers QmitkFunctionalityComponents
   DEPENDS MitkImageStatistics MitkQtWidgets
   PACKAGE_DEPENDS Qt4|QtWebKit Qwt Qxt
+  WARNINGS_AS_ERRORS
 )