diff --git a/src/osg/CMakeLists.txt b/src/osg/CMakeLists.txt
index f1ff8321b..1b6d8100b 100644
--- a/src/osg/CMakeLists.txt
+++ b/src/osg/CMakeLists.txt
@@ -222,6 +222,7 @@ SET(TARGET_H
     ${HEADER_PATH}/VertexProgram
     ${HEADER_PATH}/View
     ${HEADER_PATH}/Viewport
+    ${HEADER_PATH}/ViewportIndexed
     ${OPENSCENEGRAPH_VERSION_HEADER}
     ${OPENSCENEGRAPH_CONFIG_HEADER}
     ${OPENSCENEGRAPH_OPENGL_HEADER}
@@ -388,6 +389,7 @@ SET(TARGET_SRC
     VertexProgram.cpp
     View.cpp
     Viewport.cpp
+    ViewportIndexed.cpp
 
     glu/libutil/error.cpp
     glu/libutil/mipmap.cpp