diff --git a/examples/osgviewer/osgviewer.cpp b/examples/osgviewer/osgviewer.cpp
index c4560fd01..39875b170 100644
--- a/examples/osgviewer/osgviewer.cpp
+++ b/examples/osgviewer/osgviewer.cpp
@@ -24,6 +24,8 @@ int main( int argc, char **argv )
     arguments.getApplicationUsage()->setApplicationName(arguments.getApplicationName());
     arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the standard OpenSceneGraph example which loads and visualises 3d models.");
     arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
+    arguments.getApplicationUsage()->addCommandLineOption("--image <filename>","Load an image and render it on a quad");
+    arguments.getApplicationUsage()->addCommandLineOption("--dem <filename>","Load an image/DEM and render it on a HeightField");
     arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");