diff --git a/examples/osganimationhardware/osganimationhardware.cpp b/examples/osganimationhardware/osganimationhardware.cpp
index 6efaf1198..791256a9a 100644
--- a/examples/osganimationhardware/osganimationhardware.cpp
+++ b/examples/osganimationhardware/osganimationhardware.cpp
@@ -23,6 +23,7 @@
 #include <osgGA/AnimationPathManipulator>
 #include <osgGA/TerrainManipulator>
 #include <osg/Drawable>
+#include <osg/MatrixTransform>
 
 #include <osgAnimation/BasicAnimationManager>
 #include <osgAnimation/RigGeometry>