diff --git a/src/ViewerTest/ViewerTest_EventManager.cxx b/src/ViewerTest/ViewerTest_EventManager.cxx
index 99141ed81c..2bb2362f35 100644
--- a/src/ViewerTest/ViewerTest_EventManager.cxx
+++ b/src/ViewerTest/ViewerTest_EventManager.cxx
@@ -22,6 +22,7 @@
 #include <AIS_Shape.hxx>
 #include <Aspect_Grid.hxx>
 #include <Draw.hxx>
+#include <Message.hxx>
 #include <ViewerTest_ContinuousRedrawer.hxx>
 #include <ViewerTest_V3dView.hxx>
 #include <ViewerTest.hxx>