diff --git a/include/osgTerrain/DataSet b/include/osgTerrain/DataSet
index 3c8155829..cde76c020 100644
--- a/include/osgTerrain/DataSet
+++ b/include/osgTerrain/DataSet
@@ -163,6 +163,7 @@ class OSGTERRAIN_EXPORT DataSet : public osg::Referenced
             enum ParameterPolicy
             {
                 PREFER_CONFIG_SETTINGS,
+                PREFER_CONFIG_SETTINGS_BUT_SCALE_BY_FILE_RESOLUTION,
                 PREFER_FILE_SETTINGS
             };