diff --git a/code/nel/tools/3d/object_viewer_qt/src/3rdparty/qtpropertybrowser/CMakeLists.txt b/code/nel/tools/3d/object_viewer_qt/src/3rdparty/qtpropertybrowser/CMakeLists.txt
index 38131aeb3..f4ed13e0a 100644
--- a/code/nel/tools/3d/object_viewer_qt/src/3rdparty/qtpropertybrowser/CMakeLists.txt
+++ b/code/nel/tools/3d/object_viewer_qt/src/3rdparty/qtpropertybrowser/CMakeLists.txt
@@ -88,7 +88,7 @@ TARGET_LINK_LIBRARIES(qt_property_browser ${QT_LIBRARIES})
 
 ADD_DEFINITIONS(${QT_DEFINITIONS})
 ADD_DEFINITIONS(-DQT_DLL)
-#ADD_DEFINITIONS(-DQT_QTPROPERTYBROWSER_EXPORT)
+ADD_DEFINITIONS(-DQT_QTPROPERTYBROWSER_EXPORT)
 ADD_DEFINITIONS(-DQT_PLUGIN)
 #ADD_DEFINITIONS(-DQT_NO_DEBUG)
 ADD_DEFINITIONS(-DQT_SHARED)