diff --git a/components/shader/shadervisitor.cpp b/components/shader/shadervisitor.cpp
index 1af9f94c5..612c9011d 100644
--- a/components/shader/shadervisitor.cpp
+++ b/components/shader/shadervisitor.cpp
@@ -6,6 +6,7 @@
 #include <osg/Material>
 #include <osg/Multisample>
 #include <osg/Texture>
+#include <osg/ValueObject>
 
 #include <osgUtil/TangentSpaceGenerator>